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				<td><h1>CodeIgniter User Guide Version 2.1.3</h1></td>
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		<h1>Change Log</h1>

		<h2>Version 2.1.3</h2>
		<p>Release Date: October 8, 2012</p>

		<h3>Bug fixes for 2.1.3:</h3>
		<ul>
			<li>Fixed a bug (#1543) - <a href="libraries/caching.html#file">File-based
					Caching</a> method <samp>get_metadata()</samp> used a non-existent
				array key to look for the TTL value.
			</li>
			<li>Fixed a bug (#1314) - <a href="libraries/session.html">Session
					Library</a> method <samp>sess_destroy()</samp> didn't destroy the
				userdata array.
			</li>
			<li>Fixed a bug where the <a href="libraries/profiler.html">Profiler
					Library</a> issued an E_WARNING error if <a
				href="libraries/session.html">Session</a> userdata contains objects.
			</li>
			<li>Fixed a bug (#1699) - <a href="libraries/migration.html">Migration
					Library</a> ignored the <samp>$config['migration_path']</samp> setting.
			</li>
			<li>Fixed a bug (#227) - <a href="libraries/input.html">Input
					Library</a> allowed unconditional spoofing of HTTP clients' IP
				addresses through the HTTP_CLIENT_IP header.
			</li>
			<li>Fixed a bug (#907) - <a href="libraries/input.html">Input
					Library</a> ignored HTTP_X_CLUSTER_CLIENT_IP and HTTP_X_CLIENT_IP
				headers when checking for proxies.
			</li>
			<li>Fixed a bug (#940) - <samp>csrf_verify()</samp> used to set
				the CSRF cookie while processing a POST request with no actual POST
				data, which resulted in validating a request that should be
				considered invalid.
			</li>
			<li>Fixed a bug in the <a href="libraries/security.html">Security
					Library</a> where a CSRF cookie was created even if <samp>$config['csrf_protection']</samp>
				is set tot FALSE.
			</li>
			<li>Fixed a bug (#1715) - <a href="libraries/input.html">Input
					Library</a> triggered <samp>csrf_verify()</samp> on CLI requests.
			</li>
		</ul>

		<h2>Version 2.1.2</h2>
		<p>Release Date: June 29, 2012</p>

		<ul>
			<li>General Changes
				<ul>
					<li>Improved security in <kbd>xss_clean()</kbd>.
					</li>
				</ul>
			</li>
		</ul>

		<h2>Version 2.1.1</h2>
		<p>Release Date: June 12, 2012</p>

		<ul>
			<li>General Changes
				<ul>
					<li>Fixed support for docx, xlsx files in mimes.php.</li>
				</ul>
			</li>
			<li>Libraries
				<ul>
					<li>Further improved MIME type detection in the <a
						href="libraries/file_uploading.html">File Uploading Library</a>.
					</li>
					<li>Added support for IPv6 to the <a
						href="libraries/input.html">Input Library</a>.
					</li>
					<li>Added support for the IP format parameter to the <a
						href="libraries/form_validation.html">Form Validation Library</a>.
					</li>
				</ul>
			</li>
			<li>Helpers
				<ul>
					<li><samp>url_title()</samp> performance and output improved.
						You can now use any string as the word delimiter. Backwards
						compatible with 'dash' or 'underscore' as words delimiters.</li>
				</ul>
			</li>
		</ul>

		<h3>Bug fixes for 2.1.1</h3>
		<ul>
			<li>Fixed a bug (#697) - A wrong array key was used in the
				Upload library to check for mime-types.</li>
			<li>Fixed a bug - form_open() compared $action against
				site_url() instead of base_url()</li>
			<li>Fixed a bug - CI_Upload::_file_mime_type() could've failed
				if mime_content_type() is used for the detection and returns FALSE.</li>
			<li>Fixed a bug (#538) - Windows paths were ignored when using
				the <a href="libraries/image_lib.html">Image Manipulation Class</a>
				to create a new file.
			</li>
			<li>Fixed a bug - When database caching was enabled,
				$this->db->query() checked the cache before binding variables which
				resulted in cached queries never being found.</li>
			<li>Fixed a bug - CSRF cookie value was allowed to be any
				(non-empty) string before being written to the output, making code
				injection a risk.</li>
			<li>Fixed a bug (#726) - PDO put a 'dbname' argument in it's
				connection string regardless of the database platform in use, which
				made it impossible to use SQLite.</li>
			<li>Fixed a bug - CI_DB_pdo_result::num_rows() was not returning
				properly value with SELECT queries, cause it was relying on
				PDOStatement::rowCount().</li>
			<li>Fixed a bug (#1059) - CI_Image_lib::clear() was not
				correctly clearing all necessary object properties, namely width and
				height.</li>
		</ul>


		<h2>Version 2.1.0</h2>
		<p>Release Date: November 14, 2011</p>

		<ul>
			<li>General Changes
				<ul>
					<li>Fixed a potential parameter injection flaw in the <a
						href="libraries/security.html">Security Library</a> and
						strengthened the XSS filter for HTML5 vulnerabilites.
					</li>
					<li>Callback validation rules can now accept parameters like
						any other validation rule.</li>
					<li>Added html_escape() to the <a
						href="general/common_functions.html">Common functions</a> to
						escape HTML output for preventing XSS easliy.
					</li>
				</ul>
			</li>
			<li>Helpers
				<ul>
					<li>Added <samp>increment_string()</samp> to <a
						href="helpers/string_helper.html">String Helper</a> to turn "foo"
						into "foo-1" or "foo-1" into "foo-2".
					</li>
					<li>Altered form helper - made action on form_open_multipart
						helper function call optional. Fixes (#65)</li>
					<li><samp>url_title()</samp> will now trim extra dashes from
						beginning and end.</li>
					<li>Improved speed of <a href="helpers/string_helper.html">String
							Helper</a>'s <b>random_string()</b> method
					</li>
				</ul>
			</li>
			<li>Database
				<ul>
					<li>Added a <a href="http://www.cubrid.org/" target="_blank">CUBRID</a>
						driver to the <a href="libraries/database.html">Database
							driver</a>. Thanks to the CUBRID team for supplying this patch.
					</li>
					<li>Added a <a
						href="http://www.php.net/manual/en/intro.pdo.php" target="_blank">PDO</a>
						driver to the <a href="libraries/database.html">Database
							driver</a>.
					</li>
					<li>Typecast limit and offset in the <a
						href="database/queries.html">Database driver</a> to integers to
						avoid possible injection.
					</li>
					<li>Added additional option 'none' for the optional third
						argument for <kbd>$this->db->like()</kbd> in the <a
						href="database/active_record.html">Database driver</a>.
					</li>
					<li>Added <kbd>$this->db->insert_batch()</kbd> support to the
						OCI8 (Oracle) driver.
					</li>
				</ul>
			</li>
			<li>Libraries
				<ul>
					<li>Changed <kbd>$this->cart->insert()</kbd> in the <a
						href="libraries/cart.html">Cart library</a> to return the Row ID
						if a single item was inserted successfully.
					</li>
					<li>Added support to set an optional parameter in your
						callback rules of validation using the <a
						href="libraries/form_validation.html">Form Validation library</a>.
					</li>
					<li>Added a <a href="libraries/migration.html">Migration
							library</a> to assist with applying incremental updates to your
						database schema.
					</li>
					<li>Driver children can be located in any package path.</li>
					<li>Added <samp>is_unique</samp> to the <a
						href="libraries/form_validation.html">Form Validation library</a>.
					</li>
					<li>Added <kbd>$config['use_page_numbers']</kbd> to the <a
						href="libraries/pagination.html">Pagination library</a>, which
						enables real page numbers in the URI.
					</li>
					<li>Added TLS and SSL Encryption for SMTP.</li>
				</ul>
			</li>
			<li>Core
				<ul>
					<li>Changed private functions in <a href="libraries/cart.html">URI
							library</a> to protected so <kdb>MY_URI</kdb> can override them.
					</li>
					<li>Removed <samp>CI_CORE</samp> boolean constant from
						CodeIgniter.php (there are no longer different Reactor and Core
						versions).
					</li>
				</ul>
			</li>
		</ul>

		<h3>Bug fixes for 2.1.0</h3>
		<ul>
			<li>Fixed #378 Robots identified as regular browsers by the <a
				href="libraries/user_agent.html">User Agent class</a>.
			</li>
			<li>If a config class was loaded first then a library with the
				same name is loaded, the config would be ignored.</li>
			<li>Fixed a bug (Reactor #19) where 1) the 404_override route
				was being ignored in some cases, and 2) auto-loaded libraries were
				not available to the 404_override controller when a controller
				existed but the requested method did not.</li>
			<li>Fixed a bug (Reactor #89) where MySQL export would fail if
				the table had hyphens or other non alphanumeric/underscore
				characters.</li>
			<li>Fixed a bug (#200) where MySQL queries would be malformed
				after calling <kbd>$this->db->count_all()</kbd> then <kdb>$this->db->get()</kdb>
			</li>
			<li>Fixed bug #105 that stopped query errors from being logged
				unless database debugging was enabled</li>
			<li>Fixed a bug (#160) - Removed unneeded array copy in the file
				cache driver.</li>
			<li>Fixed a bug (#150) - <samp>field_data()</samp> now correctly
				returns column length.
			</li>
			<li>Fixed a bug (#8) - <samp>load_class()</samp> now looks for
				core classes in <samp>APPPATH</samp> first, allowing them to be
				replaced.
			</li>
			<li>Fixed a bug (#24) - ODBC database driver called incorrect
				parent in __construct().</li>
			<li>Fixed a bug (#85) - OCI8 (Oracle) database <kbd>escape_str()</kbd>
				function did not escape correct.
			</li>
			<li>Fixed a bug (#344) - Using schema found in <a
				href="libraries/sessions.html">Saving Session Data to a Database</a>,
				system would throw error "user_data does not have a default value"
				when deleting then creating a session.
			</li>
			<li>Fixed a bug (#112) - OCI8 (Oracle) driver didn't pass the
				configured database character set when connecting.</li>
			<li>Fixed a bug (#182) - OCI8 (Oracle) driver used to re-execute
				the statement whenever num_rows() is called.</li>
			<li>Fixed a bug (#82) - WHERE clause field names in the DB <kbd>update_string()</kbd>
				method were not escaped, resulting in failed queries in some cases.
			</li>
			<li>Fixed a bug (#89) - Fix a variable type mismatch in DB <kbd>display_error()</kbd>
				where an array is expected, but a string could be set instead.
			</li>
			<li>Fixed a bug (#467) - Suppress warnings generated from <kbd>get_magic_quotes_gpc()</kbd>
				(deprecated in PHP 5.4)
			</li>
			<li>Fixed a bug (#484) - First time <kbd>_csrf_set_hash()</kbd>
				is called, hash is never set to the cookie (in Security.php).
			</li>
			<li>Fixed a bug (#60) - Added <kbd>_file_mime_type()</kbd>
				method to the <a href="libraries/file_uploading.html">File
					Uploading Library</a> in order to fix a possible MIME-type injection
				(also fixes bug #394).
			</li>
			<li>Fixed a bug (#537) - Support for all wav type in browser.</li>
			<li>Fixed a bug (#576) - Using <kbd>ini_get()</kbd> function to
				detect if apc is enabled or not.
			</li>
			<li>Fixed invalid date time format in <a
				href="helpers/date_helper.html">Date helper</a> and <a
				href="libraries/xmlrpc.html">XMLRPC library</a>.
			</li>
		</ul>

		<h2>Version 2.0.3</h2>
		<p>Release Date: August 20, 2011</p>

		<ul>
			<li>Security
				<ul>
					<li>An improvement was made to the MySQL and MySQLi drivers to
						prevent exposing a potential vector for SQL injection on sites
						using multi-byte character sets in the database client connection.
						<p>
							An incompatibility in PHP versions &lt; 5.2.3 and MySQL &lt;
							5.0.7 with <em>mysql_set_charset()</em> creates a situation where
							using multi-byte character sets on these environments may
							potentially expose a SQL injection attack vector. Latin-1, UTF-8,
							and other "low ASCII" character sets are unaffected on all
							environments.
						</p>
						<p class="critical">If you are running or considering running
							a multi-byte character set for your database connection, please
							pay close attention to the server environment you are deploying
							on to ensure you are not vulnerable.</p>
					</li>
				</ul>
			</li>
			<li>General Changes
				<ul>
					<li>Fixed a bug where there was a misspelling within a code
						comment in the index.php file.</li>
					<li>Added Session Class userdata to the output profiler.
						Additionally, added a show/hide toggle on HTTP Headers, Session
						Data and Config Variables.</li>
					<li>Removed internal usage of the <samp>EXT</samp> constant.
					</li>
					<li>Visual updates to the welcome_message view file and
						default error templates. Thanks to <a
						href="https://bitbucket.org/danijelb">danijelb</a> for the pull
						request.
					</li>
					<li>Added "application/x-csv" to mimes.php.</li>
					<li>Fixed a bug where <a href="libraries/email.html">Email
							library</a> attachments with a "." in the name would using invalid
						MIME-types.
					</li>
					<li>Callback validation rules can now accept parameters like
						any other validation rule.</li>
				</ul>
			</li>
			<li>Helpers
				<ul>
					<li>Added an optional third parameter to <samp>heading()</samp>
						which allows adding html attributes to the rendered heading tag.
					</li>
					<li><kbd>form_open()</kbd> now only adds a hidden (Cross-site
						Reference Forgery) protection field when the form's action is
						internal and is set to the post method. (Reactor #165)</li>
					<li>Re-worked <samp>plural()</samp> and <samp>singular()</samp>
						functions in the <a href="helpers/inflector_helper.html">Inflector
							helper</a> to support considerably more words.
					</li>
				</ul>
			</li>
			<li>Libraries
				<ul>
					<li>Altered Session to use a longer match against the
						user_agent string. See upgrade notes if using database sessions.</li>
					<li>Added <kbd>is_unique</kbd> to the <a
						href="libraries/form_validation.html">Form Validation library</a>.
					</li>
					<li>Added <kbd>$this->db->set_dbprefix()</kbd> to the <a
						href="database/queries.html">Database Driver</a>.
					</li>
					<li>Changed <kbd>$this->cart->insert()</kbd> in the <a
						href="libraries/cart.html">Cart Library</a> to return the Row ID
						if a single item was inserted successfully.
					</li>
					<li>Added <kbd>$this->load->get_var()</kbd> to the <a
						href="libraries/loader.html">Loader library</a> to retrieve global
						vars set with <kbd>$this->load->view()</kbd> and <kbd>$this->load->vars()</kbd>.
					</li>
					<li>Changed <kbd>$this->db->having()</kbd> to insert quotes
						using escape() rather than escape_str().
					</li>
				</ul>
			</li>
		</ul>

		<h3>Bug fixes for 2.0.3</h3>
		<ul>
			<li>Added ENVIRONMENT to reserved constants. (Reactor #196)</li>
			<li>Changed server check to ensure SCRIPT_NAME is defined.
				(Reactor #57)</li>
			<li>Removed <samp>APPPATH.'third_party'</samp> from the packages
				autoloader to negate needless file stats if no packages exist or if
				the developer does not load any other packages by default.
			</li>
			<li>Fixed a bug (Reactor #231) where Sessions Library database
				table example SQL did not contain an index on last_activity. See <a
				href="installation/upgrade_203.html">Upgrade Notes</a>.
			</li>
			<li>Fixed a bug (Reactor #229) where the Sessions Library
				example SQL in the documentation contained incorrect SQL.</li>
			<li>Fixed a bug (Core #340) where when passing in the second
				parameter to $this->db->select(), column names in subsequent queries
				would not be properly escaped.</li>
			<li>Fixed issue #199 - Attributes passed as string does not
				include a space between it and the opening tag.</li>
			<li>Fixed a bug where the method <kbd>$this->cart->total_items()</kbd>
				from <a href="libraries/cart.html">Cart Library</a> now returns the
				sum of the quantity of all items in the cart instead of your total
				count.
			</li>
			<li>Fixed a bug where not setting 'null' when adding fields in
				db_forge for mysql and mysqli drivers would default to NULL instead
				of NOT NULL as the docs suggest.</li>
			<li>Fixed a bug where using <kbd>
					$this->db->select_max()
					</kdb>
					,
					<kbd>
						$this->db->select_min()
						</kdb>
						, etc could throw notices. Thanks to w43l for the patch.</li>
			<li>Replace checks for STDIN with php_sapi_name() == 'cli' which
				on the whole is more reliable. This should get parameters in crontab
				working.</li>
		</ul>

		<h2>Version 2.0.2</h2>
		<p>
			Release Date: April 7, 2011<br /> Hg Tag: v2.0.2
		</p>

		<ul>
			<li>General changes
				<ul>
					<li>The <a href="./libraries/security.html">Security
							library</a> was moved to the core and is now loaded automatically.
						Please remove your loading calls.
					</li>
					<li>The CI_SHA class is now deprecated. All supported versions
						of PHP provide a <kbd>sha1()</kbd> function.
					</li>
					<li><kbd>constants.php</kbd> will now be loaded from the
						environment folder if available.</li>
					<li>Added language key error logging</li>
					<li>Made Environment Support optional. Comment out or delete
						the constant to stop environment checks.</li>
					<li>Added Environment Support for Hooks.</li>
					<li>Added CI_ Prefix to the <a href="libraries/caching.html">Cache
							driver</a>.
					</li>
					<li>Added <a href="./general/cli.html">CLI usage</a>
						documentation.
					</li>
				</ul>
			</li>
			<li>Helpers
				<ul>
					<li>Removed the previously deprecated <kbd>dohash()</kbd> from
						the <a href="./helpers/security_helper.html">Security helper</a>;
						use <kbd>do_hash()</kbd> instead.
					</li>
					<li>Changed the 'plural' function so that it doesn't ruin the
						captalization of your string. It also take into consideration
						acronyms which are all caps.</li>
				</ul>
			</li>
			<li>Database
				<ul>
					<li><kbd>$this->db->count_all_results()</kbd> will now return
						an integer instead of a string.</li>
				</ul>
			</li>
		</ul>

		<h3>Bug fixes for 2.0.2</h3>
		<ul>
			<li>Fixed a bug (Reactor #145) where the Output Library had
				parse_exec_vars set to protected.</li>
			<li>Fixed a bug (Reactor #80) where is_really_writable would
				create an empty file when on Windows or with safe_mode enabled.</li>
			<li>Fixed various bugs with User Guide.</li>
			<li>Added is_cli_request() method to documentation for <a
				href="libraries/input.html">Input class</a>.
			</li>
			<li>Added form_validation_lang entries for <kbd>decimal</kbd>, <kbd>less_than</kbd>
				and <kbd>greater_than</kbd>.
			</li>
			<li><a
				href="https://bitbucket.org/ellislab/codeigniter-reactor/issue/153/escape-str-bug-in-mssql-driver">Fixed
					issue #153</a> Escape Str Bug in MSSQL driver.</li>
			<li><a
				href="https://bitbucket.org/ellislab/codeigniter-reactor/issue/172/bug-in-chrome-and-form_open-in-201">Fixed
					issue #172</a> Google Chrome 11 posts incorrectly when action is empty.</li>

		</ul>

		<h2>Version 2.0.1</h2>
		<p>
			Release Date: March 15, 2011<br /> Hg Tag: v2.0.1
		</p>

		<ul>
			<li>General changes
				<ul>
					<li>Added <kbd>$config['cookie_secure']</kbd> to the config
						file to allow requiring a secure (HTTPS) in order to set cookies.
					</li>
					<li>Added the constant <kbd>CI_CORE</kbd> to help
						differentiate between Core: TRUE and Reactor: FALSE.
					</li>
					<li>Added an <kbd>ENVIRONMENT</kbd> constant in index.php,
						which affects PHP error reporting settings, and optionally, which
						configuration files are loaded (see below). Read more on the <a
						href="general/environments.html">Handling Environments</a> page.
					</li>
					<li>Added support for <a
						href="libraries/config.html#environments">environment-specific</a>
						configuration files.
					</li>
				</ul>
			</li>
			<li>Libraries
				<ul>
					<li>Added <kbd>decimal</kbd>, <kbd>less_than</kbd> and <kbd>greater_than</kbd>
						rules to the <a href="libraries/form_validation.html">Form
							validation Class</a>.
					</li>
					<li><a href="libraries/input.html">Input Class</a> methods <kbd>post()</kbd>
						and <kbd>get()</kbd> will now return a full array if the first
						argument is not provided.</li>
					<li>Secure cookies can now be made with the <kbd>set_cookie()</kbd>
						helper and <a href="libraries/input.html">Input Class</a> method.
					</li>
					<li>Added <kbd>set_content_type()</kbd> to <a
						href="libraries/output.html">Output Class</a> to set the output <kbd>Content-Type</kbd>
						HTTP header based on a MIME Type or a config/mimes.php array key.
					</li>
					<li><a href="libraries/output.html">Output Class</a> will now
						support method chaining.</li>
				</ul>
			</li>
			<li>Helpers
				<ul>
					<li>Changed the logic for <kbd>form_open()</kbd> in <a
						href="helpers/form_helper.html">Form helper</a>. If no value is
						passed it will submit to the current URL.
					</li>
				</ul>
			</li>
		</ul>

		<h3>Bug fixes for 2.0.1</h3>
		<ul>
			<li>CLI requests can now be run from any folder, not just when
				CD'ed next to index.php.</li>
			<li>Fixed issue #41: Added audio/mp3 mime type to mp3.</li>
			<li>Fixed a bug (Core #329) where the file caching driver
				referenced the incorrect cache directory.</li>
			<li>Fixed a bug (Reactor #69) where the SHA1 library was named
				incorrectly.</li>
		</ul>

		<h2>Version 2.0.0</h2>
		<p>
			Release Date: January 28, 2011<br /> Hg Tag: v2.0.0
		</p>

		<ul>
			<li>General changes
				<ul>
					<li>PHP 4 support is removed. CodeIgniter now requires PHP
						5.1.6.</li>
					<li>Scaffolding, having been deprecated for a number of
						versions, has been removed.</li>
					<li>Plugins have been removed, in favor of Helpers. The
						CAPTCHA plugin has been converted to a Helper and <a
						href="./helpers/captcha_helper.html">documented</a>. The
						JavaScript calendar plugin was removed due to the ready
						availability of great JavaScript calendars, particularly with
						jQuery.
					</li>
					<li>Added new special Library type: <a
						href="./general/drivers.html">Drivers</a>.
					</li>
					<li>Added full query-string support. See the config file for
						details.</li>
					<li>Moved the application folder outside of the system folder.</li>
					<li>Moved system/cache and system/logs directories to the
						application directory.</li>
					<li>Added routing overrides to the main index.php file,
						enabling the normal routing to be overridden on a per "index" file
						basis.</li>
					<li>Added the ability to set config values (or override config
						values) directly from data set in the main index.php file. This
						allows a single application to be used with multiple front
						controllers, each having its own config values.</li>
					<li>Added <kbd>$config['directory_trigger']</kbd> to the
						config file so that a controller sub-directory can be specified
						when running _GET strings instead of URI segments.
					</li>
					<li>Added ability to set "Package" paths - specific paths
						where the Loader and Config classes should try to look first for a
						requested file. This allows distribution of sub-applications with
						their own libraries, models, config files, etc. in a single
						"package" directory. See the <a href="libraries/loader.html">Loader
							class</a> documentation for more details.
					</li>
					<li>In-development code is now hosted at <a
						href="http://bitbucket.org/ellislab/codeigniter-reactor/">BitBucket</a>.
					</li>
					<li>Removed the deprecated Validation Class.</li>
					<li>Added CI_ Prefix to all core classes.</li>
					<li>Package paths can now be set in
						application/config/autoload.php.</li>
					<li><a href="libraries/file_uploading.html">Upload library</a>
						file_name can now be set without an extension, the extension will
						be taken from the uploaded file instead of the given name.</li>
					<li>In <a href="database/forge.html">Database Forge</a> the
						name can be omitted from $this->dbforge->modify_column()'s 2nd
						param if you aren't changing the name.
					</li>
					<li><kbd>$config['base_url']</kbd> is now empty by default and
						will guess what it should be.</li>
					<li>Enabled full Command Line Interface compatibility with <kbd>config['uri_protocol']
							= 'CLI';</kbd>.
					</li>
				</ul>
			<li>Libraries
				<ul>
					<li>Added a <a href="libraries/caching.html">Cache driver</a>
						with APC, memcached, and file-based support.
					</li>
					<li>Added <var>$prefix</var>, <var>$suffix</var> and <var>$first_url</var>
						properties to <a href="./libraries/pagination.html">Pagination
							library</a>.
					</li>
					<li>Added the ability to suppress first, previous, next, last,
						and page links by setting their values to FALSE in the <a
						href="./libraries/pagination.html">Pagination library</a>.
					</li>
					<li>Added <a href="./libraries/security.html">Security
							library</a>, which now contains the <dfn>xss_clean</dfn> function, <dfn>filename_security</dfn>
						function and other security related functions.
					</li>
					<li>Added CSRF (Cross-site Reference Forgery) protection to
						the <a href="./libraries/security.html">Security library</a>.
					</li>
					<li>Added <var>$parse_exec_vars</var> property to Output
						library.
					</li>
					<li>Added ability to enable / disable individual sections of
						the <a href="general/profiling.html">Profiler</a>
					</li>
					<li>Added a wildcard option <kbd>$config['allowed_types']
							= '*'</kbd> to the <a href="./libraries/file_uploading.html">File
							Uploading Class</a>.
					</li>
					<li>Added an 'object' config variable to the XML-RPC Server
						library so that one can specify the object to look for requested
						methods, instead of assuming it is in the $CI superobject.</li>
					<li>Added "is_object" into the list of unit tests capable of
						being run.</li>
					<li>Table library will generate an empty cell with a blank
						string, or NULL value.</li>
					<li>Added ability to set tag attributes for individual cells
						in the Table library</li>
					<li>Added a <kbd>parse_string()</kbd> method to the <a
						href="libraries/parser.html">Parser Class</a>.
					</li>
					<li>Added HTTP headers and Config information to the <a
						href="general/profiling.html">Profiler</a> output.
					</li>
					<li>Added Chrome and Flock to the list of detectable browsers
						by <kbd>browser()</kbd> in the <a href="libraries/user_agent.html">User
							Agent Class</a>.
					</li>
					<li>The <a href="libraries/unit_testing.html">Unit Test
							Class</a> now has an optional "notes" field available to it, and
						allows for discrete display of test result items using <kbd>$this->unit->set_test_items()</kbd>.
					</li>
					<li>Added a <kbd>$xss_clean</kbd> class variable to the XMLRPC
						library, enabling control over the use of the Security library's <kbd>xss_clean()</kbd>
						method.
					</li>
					<li>Added a <kbd>download()</kbd> method to the <a
						href="libraries/ftp.html">FTP library</a></li>
					<li>Changed <kbd>do_xss_clean()</kbd> to return FALSE if the
						uploaded file fails XSS checks.
					</li>
					<li>Added stripslashes() and trim()ing of double quotes from
						$_FILES type value to standardize input in Upload library.</li>
					<li>Added a second parameter (boolean) to <kbd>$this->zip->read_dir('/path/to/directory',
							FALSE)</kbd> to remove the preceding trail of empty folders when
						creating a Zip archive. This example would contain a zip with
						"directory" and all of its contents.
					</li>
					<li>Added ability in the Image Library to handle PNG
						transparency for resize operations when using the GD lib.</li>
					<li>Modified the Session class to prevent use if no encryption
						key is set in the config file.</li>
					<li>Added a new config item to the Session class <kbd>sess_expire_on_close</kbd>
						to allow sessions to auto-expire when the browser window is
						closed.
					</li>
					<li>Improved performance of the Encryption library on servers
						where Mcrypt is available.</li>
					<li>Changed the default encryption mode in the Encryption
						library to CBC.</li>
					<li>Added an <kbd>encode_from_legacy()</kbd> method to provide
						a way to transition encrypted data from CodeIgniter 1.x to
						CodeIgniter 2.x. Please see the <a
						href="./installation/upgrade_200.html">upgrade instructions</a>
						for details.
					</li>
					<li>Altered Form_Validation library to allow for method
						chaining on <kbd>set_rules()</kbd>, <kbd>set_message()</kbd> and <kbd>set_error_delimiters()</kbd>
						functions.
					</li>
					<li>Altered Email Library to allow for method chaining.</li>
					<li>Added <kbd>request_headers()</kbd>, <kbd>get_request_header()</kbd>
						and <kbd>is_ajax_request()</kbd> to the input class.
					</li>
					<li>Altered <a href="libraries/user_agent.html">User agent
							library</a> so that <kbd>is_browser()</kbd>, <kbd>is_mobile()</kbd>
						and <kbd>is_robot()</kbd> can optionally check for a specific
						browser or mobile device.
					</li>
					<li>Altered <a href="libraries/input.html">Input library</a>
						so that <kbd>post()</kbd> and <kbd>get()</kbd> will return all
						POST and GET items (respectively) if there are no parameters
						passed in.
					</li>
				</ul>
			</li>
			<li>Database
				<ul>
					<li><a href="./database/configuration.html">database
							configuration</a>.</li>
					<li>Added <kbd>autoinit</kbd> value to <a
						href="./database/configuration.html">database configuration</a>.
					</li>
					<li>Added <kbd>stricton</kbd> value to <a
						href="./database/configuration.html">database configuration</a>.
					</li>
					<li>Added <kbd>database_exists()</kbd> to the <a
						href="database/utilities.html">Database Utilities Class</a>.
					</li>
					<li>Semantic change to db->version() function to allow a list
						of exceptions for databases with functions to return version
						string instead of specially formed SQL queries. Currently this
						list only includes Oracle and SQLite.</li>
					<li>Fixed a bug where driver specific table identifier
						protection could lead to malformed queries in the <kbd>field_data()</kbd>
						functions.
					</li>
					<li>Fixed a bug where an undefined class variable was
						referenced in database drivers.</li>
					<li>Modified the database errors to show the filename and line
						number of the problematic query.</li>
					<li>Removed the following deprecated functions: orwhere,
						orlike, groupby, orhaving, orderby, getwhere.</li>
					<li>Removed deprecated _drop_database() and _create_database()
						functions from the db utility drivers.</li>
					<li>Improved dbforge create_table() function for the Postgres
						driver.</li>
				</ul>
			</li>
			<li>Helpers
				<ul>
					<li>Added <kbd>convert_accented_characters()</kbd> function to
						<a href="./helpers/text_helper.html">text helper</a>.
					</li>
					<li>Added accept-charset to the list of inserted attributes of
						<kbd>form_open()</kbd> in the <a href="helpers/form_helper.html">Form
							Helper</a>.
					</li>
					<li>Deprecated the <kbd>dohash()</kbd> function in favour of <kbd>do_hash()</kbd>
						for naming consistency.
					</li>
					<li>Non-backwards compatible change made to <kbd>get_dir_file_info()</kbd>
						in the <a href="helpers/file_helper.html">File Helper</a>. No
						longer recurses by default so as to encourage responsible use
						(this function can cause server performance issues when used
						without caution).
					</li>
					<li>Modified the second parameter of <kbd>directory_map()</kbd>
						in the <a href="helpers/directory_helper.html">Directory
							Helper</a> to accept an integer to specify recursion depth.
					</li>
					<li>Modified <kbd>delete_files()</kbd> in the <a
						href="helpers/file_helper.html">File Helper</a> to return FALSE on
						failure.
					</li>
					<li>Added an optional second parameter to <kbd>byte_format()</kbd>
						in the <a href="helpers/number_helper.html">Number Helper</a> to
						allow for decimal precision.
					</li>
					<li>Added alpha, and sha1 string types to <kbd>random_string()</kbd>
						in the <a href="helpers/string_helper.html">String Helper</a>.
					</li>
					<li>Modified <kbd>prep_url()</kbd> so as to not prepend
						http:// if the supplied string already has a scheme.
					</li>
					<li>Modified <kbd>get_file_info</kbd> in the file helper,
						changing filectime() to filemtime() for dates.
					</li>
					<li>Modified <kbd>smiley_js()</kbd> to add optional third
						parameter to return only the javascript with no script tags.
					</li>
					<li>The <kbd>img()</kbd> function of the <a
						href="./helpers/html_helper.html">HTML helper</a> will now
						generate an empty string as an alt attribute if one is not
						provided.
					</li>
					<li>If CSRF is enabled in the application config file, <kbd>form_open()</kbd>
						will automatically insert it as a hidden field.
					</li>
					<li>Added <kbd>sanitize_filename()</kbd> into the <a
						href="./helpers/security_helper.html">Security helper</a>.
					</li>
					<li>Added <kbd>ellipsize()</kbd> to the <a
						href="./helpers/text_helper.html">Text Helper</a></li>
					<li>Added <kbd>elements()</kbd> to the <a
						href="./helpers/array_helper.html">Array Helper</a></li>
				</ul>
			</li>
			<li>Other Changes
				<ul>
					<li>Added an optional second parameter to <kbd>show_404()</kbd>
						to disable logging.
					</li>
					<li>Updated loader to automatically apply the sub-class prefix
						as an option when loading classes. Class names can be prefixed
						with the standard "CI_" or the same prefix as the subclass prefix,
						or no prefix at all.</li>
					<li>Increased randomness with <kbd>is_really_writable()</kbd>
						to avoid file collisions when hundreds or thousands of requests
						occur at once.
					</li>
					<li>Switched some DIR_WRITE_MODE constant uses to
						FILE_WRITE_MODE where files and not directories are being operated
						on.</li>
					<li><kbd>get_mime_by_extension()</kbd> is now case
						insensitive.</li>
					<li>Added "default" to the list <a
						href="general/reserved_names.html">Reserved Names</a>.
					</li>
					<li>Added 'application/x-msdownload' for .exe files and
						''application/x-gzip-compressed' for .tgz files to
						config/mimes.php.</li>
					<li>Updated the output library to no longer compress output or
						send content-length headers if the server runs with
						zlib.output_compression enabled.</li>
					<li>Eliminated a call to is_really_writable() on each request
						unless it is really needed (Output caching)</li>
					<li>Documented <kbd>append_output()</kbd> in the <a
						href="libraries/output.html">Output Class</a>.
					</li>
					<li>Documented a second argument in the <kbd>decode()</kbd>
						function for the <a href="libraries/encryption.html">Encryption
							Class</a>.
					</li>
					<li>Documented db->close().</li>
					<li>Updated the router to support a default route with any
						number of segments.</li>
					<li>Moved _remove_invisible_characters() function from the <a
						href="libraries/security.html">Security Library</a> to <a
						href="general/common_functions.html">common functions.</a></li>
					<li>Added audio/mpeg3 as a valid mime type for MP3.</li>
				</ul>
			</li>
		</ul>

		<h3>Bug fixes for 2.0.0</h3>
		<ul>
			<li>Fixed a bug where you could not change the User-Agent when
				sending email.</li>
			<li>Fixed a bug where the Output class would send incorrect
				cached output for controllers implementing their own <dfn>_output()</dfn>
				method.
			</li>
			<li>Fixed a bug where a failed query would not have a saved
				query execution time causing errors in the Profiler</li>
			<li>Fixed a bug that was writing log entries when multiple
				identical helpers and plugins were loaded.</li>
			<li>Fixed assorted user guide typos or examples (#10693, #8951,
				#7825, #8660, #7883, #6771, #10656).</li>
			<li>Fixed a language key in the profiler:
				"profiler_no_memory_usage" to "profiler_no_memory".</li>
			<li>Fixed an error in the Zip library that didn't allow
				downloading on PHP 4 servers.</li>
			<li>Fixed a bug in the Form Validation library where fields
				passed as rule parameters were not being translated (#9132)</li>
			<li>Modified inflector helper to properly pluralize words that
				end in 'ch' or 'sh'</li>
			<li>Fixed a bug in xss_clean() that was not allowing hyphens in
				query strings of submitted URLs.</li>
			<li>Fixed bugs in get_dir_file_info() and get_file_info() in the
				File Helper with recursion, and file paths on Windows.</li>
			<li>Fixed a bug where Active Record override parameter would not
				let you disable Active Record if it was enabled in your database
				config file.</li>
			<li>Fixed a bug in reduce_double_slashes() in the String Helper
				to properly remove duplicate leading slashes (#7585)</li>
			<li>Fixed a bug in values_parsing() of the XML-RPC library which
				prevented NULL variables typed as 'string' from being handled
				properly.</li>
			<li>Fixed a bug were form_open_multipart() didn't accept string
				attribute arguments (#10930).</li>
			<li>Fixed a bug (#10470) where <kdb>get_mime_by_extension()</kbd>
				was case sensitive.</li>
			<li>Fixed a bug where some error messages for the SQLite and
				Oracle drivers would not display.</li>
			<li>Fixed a bug where files created with the Zip Library would
				result in file creation dates of 1980.</li>
			<li>Fixed a bug in the Session library that would result in PHP
				error when attempting to store values with objects.</li>
			<li>Fixed a bug where extending the Controller class would
				result in a fatal PHP error.</li>
			<li>Fixed a PHP Strict Standards Error in the index.php file.</li>
			<li>Fixed a bug where getimagesize() was being needlessly
				checked on non-image files in is_allowed_type().</li>
			<li>Fixed a bug in the Encryption library where an empty key was
				not triggering an error.</li>
			<li>Fixed a bug in the Email library where CC and BCC recipients
				were not reset when using the clear() method (#109).</li>
			<li>Fixed a bug in the URL Helper where prep_url() could cause a
				PHP error on PHP versions &lt; 5.1.2.</li>
			<li>Added a log message in core/output if the cache directory
				config value was not found.</li>
			<li>Fixed a bug where multiple libraries could not be loaded by
				passing an array to load-&gt;library()</li>
			<li>Fixed a bug in the html helper where too much white space
				was rendered between the src and alt tags in the img() function.</li>
			<li>Fixed a bug in the profilers _compile_queries() function.</li>
			<li>Fixed a bug in the date helper where the DATE_ISO8601
				variable was returning an incorrectly formatted date string.</li>
		</ul>

		<h2>Version 1.7.2</h2>
		<p>
			Release Date: September 11, 2009<br /> Hg Tag: v1.7.2
		</p>

		<ul>
			<li>Libraries
				<ul>
					<li>Added a new <a href="libraries/cart.html">Cart Class</a>.
					</li>
					<li>Added the ability to pass $config['file_name'] for the <a
						href="libraries/file_uploading.html">File Uploading Class</a> and
						rename the uploaded file.
					</li>
					<li>Changed order of listed user-agents so Safari would more
						accurately report itself. (#6844)</li>
				</ul>
			</li>
			<li>Database
				<ul>
					<li>Switched from using gettype() in escape() to is_* methods,
						since future PHP versions might change its output.</li>
					<li>Updated all database drivers to handle arrays in
						escape_str()</li>
					<li>Added escape_like_str() method for escaping strings to be
						used in LIKE conditions</li>
					<li>Updated Active Record to utilize the new LIKE escaping
						mechanism.</li>
					<li>Added reconnect() method to DB drivers to try to keep
						alive / reestablish a connection after a long idle.</li>
					<li>Modified MSSQL driver to use mssql_get_last_message() for
						error messages.</li>
				</ul>
			</li>
			<li>Helpers
				<ul>
					<li>Added <kbd>form_multiselect()</kbd> to the <a
						href="helpers/form_helper.html">Form helper</a>.
					</li>
					<li>Modified <kbd>form_hidden()</kbd> in the <a
						href="helpers/form_helper.html">Form helper</a> to accept
						multi-dimensional arrays.
					</li>
					<li>Modified <kbd>form_prep()</kbd> in the <a
						href="helpers/form_helper.html">Form helper</a> to keep track of
						prepped fields to avoid multiple prep/mutation from subsequent
						calls which can occur when using Form Validation and form helper
						functions to output form fields.
					</li>
					<li>Modified <kbd>directory_map()</kbd> in the <a
						href="helpers/directory_helper.html">Directory helper</a> to allow
						the inclusion of hidden files, and to return FALSE on failure to
						read directory.
					</li>
					<li>Modified the <a href="helpers/smiley_helper.html">Smiley
							helper</a> to work with multiple fields and insert the smiley at the
						last known cursor position.
					</li>
				</ul>
			</li>
			<li>General
				<ul>
					<li>Compatible with PHP 5.3.0</li>
					<li>Modified <a href="general/errors.html">show_error()</a> to
						allow sending of HTTP server response codes.
					</li>
					<li>Modified <a href="general/errors.html">show_404()</a> to
						send 404 status code, removing non-CGI compatible header()
						statement from error_404.php template.
					</li>
					<li>Added set_status_header() to the <a
						href="general/common_functions.html">Common functions<a>
								to allow use when the Output class is unavailable.</li>
					<li>Added is_php() to <a href="general/common_functions.html">Common
							functions</a> to facilitate PHP version comparisons.
						</p>
					<li>Added 2 CodeIgniter "cheatsheets" (thanks to
						DesignFellow.com for this contribution).</li>
				</ul>
			</li>
		</ul>

		<h3>Bug fixes for 1.7.2</h3>
		<ul>
			<li>Fixed assorted user guide typos or examples (#6743, #7214,
				#7516, #7287, #7852, #8224, #8324, #8349).</li>
			<li>Fixed a bug in the Form Validation library where multiple
				callbacks weren't working (#6110)</li>
			<li>doctype helper default value was missing a "1".</li>
			<li>Fixed a bug in the language class when outputting an error
				for an unfound file.</li>
			<li>Fixed a bug in the Calendar library where the shortname was
				output for "May".</li>
			<li>Fixed a bug with ORIG_PATH_INFO that was allowing URIs of
				just a slash through.</li>
			<li>Fixed a fatal error in the Oracle and ODBC drivers (#6752)</li>
			<li>Fixed a bug where xml_from_result() was checking for a
				nonexistent method.</li>
			<li>Fixed a bug where Database Forge's add_column and
				modify_column were not looping through when sent multiple fields.</li>
			<li>Fixed a bug where the File Helper was using '/' instead of
				the DIRECTORY_SEPARATOR constant.</li>
			<li>Fixed a bug to prevent PHP errors when attempting to use
				sendmail on servers that have manually disabled the PHP popen()
				function.</li>
			<li>Fixed a bug that would cause PHP errors in XML-RPC data if
				the PHP data type did not match the specified XML-RPC type.</li>
			<li>Fixed a bug in the XML-RPC class with parsing
				dateTime.iso8601 data types.</li>
			<li>Fixed a case sensitive string replacement in xss_clean()</li>
			<li>Fixed a bug in form_textarea() where form data was not
				prepped correctly.</li>
			<li>Fixed a bug in form_prep() causing it to not preserve
				entities in the user's original input when called back into a form
				element</li>
			<li>Fixed a bug in _protect_identifiers() where the swap prefix
				($swap_pre) was not being observed.</li>
			<li>Fixed a bug where the 400 status header sent with the
				'disallowed URI characters' was not compatible with CGI
				environments.</li>
			<li>Fixed a bug in the typography class where heading tags could
				have paragraph tags inserted when using auto_typography().</li>
		</ul>

		<h2>Version 1.7.1</h2>
		<p>
			Release Date: February 10, 2009<br /> Hg Tag: 1.7.1
		</p>

		<ul>
			<li>Libraries
				<ul>
					<li>Fixed an arbitrary script execution security flaw (#6068)
						in the Form Validation library (thanks to hkk)</li>
					<li>Changed default current page indicator in the Pagination
						library to use &lt;strong&gt; instead of &lt;b&gt;</li>
					<li>A "HTTP/1.1 400 Bad Request" header is now sent when
						disallowed characters are encountered.</li>
					<li>Added &lt;big&gt;, &lt;small&gt;, &lt;q&gt;, and
						&lt;tt&gt; to the Typography parser's inline elements.</li>
					<li>Added more accurate error reporting for the Email library
						when using sendmail.</li>
					<li>Removed a strict type check from the <kbd>rotate()</kbd>
						function of the <a href="libraries/image_lib.html">Image
							Manipulation Class</a>.
					</li>
					<li>Added enhanced error checking in file saving in the Image
						library when using the GD lib.</li>
					<li>Added an additional newline between multipart email
						headers and the MIME message text for better compatibility with a
						variety of MUAs.</li>
					<li>Made modest improvements to efficiency and accuracy of
						explode_name() in the Image lib.</li>
				</ul>
			</li>
			<li>Database
				<ul>
					<li>Added where_in to the list of expected arguments received
						by <kbd>delete()</kbd>.
					</li>
				</ul>
			</li>
			<li>Helpers
				<ul>
					<li>Added the ability to have optgroups in <kbd>form_dropdown()</kbd>
						within the <a href="helpers/form_helper.html">form helper</a>.
					</li>
					<li>Added a doctype() function to the <a
						href="helpers/html_helper.html">HTML helper</a>.
					</li>
					<li>Added ability to force lowercase for <kbd>url_title()</kbd>
						in the <a href="helpers/url_helper.html">URL helper</a>.
					</li>
					<li>Changed the default "type" of <kbd>form_button()</kbd> to
						"button" from "submit" in the <a href="helpers/form_helper.html">form
							helper</a>.
					</li>
					<li>Changed redirect() in the URL helper to allow redirections
						to URLs outside of the CI site.</li>
					<li>Updated get_cookie() to try to fetch the cookie using the
						global cookie prefix if the requested cookie name doesn't exist.</li>
				</ul>
			</li>
			<li>Other Changes
				<ul>
					<li>Improved security in <kbd>xss_clean()</kbd> to help
						prevent attacks targeting Internet Explorer.
					</li>
					<li>Added 'application/msexcel' to config/mimes.php for .xls
						files.</li>
					<li>Added 'proxy_ips' config item to whitelist reverse proxy
						servers from which to trust the HTTP_X_FORWARDED_FOR header to to
						determine the visitor's IP address.</li>
					<li>Improved accuracy of Upload::is_allowed_filetype() for
						images (#6715)</li>
				</ul>
			</li>
		</ul>

		<h3>Bug fixes for 1.7.1</h3>
		<ul>
			<li>Database
				<ul>
					<li>Fixed a bug when doing 'random' on order_by() (#5706).</li>
					<li>Fixed a bug where adding a primary key through Forge could
						fail (#5731).</li>
					<li>Fixed a bug when using DB cache on multiple databases
						(#5737).</li>
					<li>Fixed a bug where TRUNCATE was not considered a "write"
						query (#6619).</li>
					<li>Fixed a bug where csv_from_result() was checking for a
						nonexistent method.</li>
					<li>Fixed a bug _protect_identifiers() where it was improperly
						removing all pipe symbols from items</li>
				</ul>
			</li>
			<li>Fixed assorted user guide typos or examples (#5998, #6093,
				#6259, #6339, #6432, #6521).</li>
			<li>Fixed a bug in the MySQLi driver when no port is specified</li>
			<li>Fixed a bug (#5702), in which the field label was not being
				fetched properly, when "matching" one field to another.</li>
			<li>Fixed a bug in which identifers were not being escaped
				properly when reserved characters were used.</li>
			<li>Fixed a bug with the regular expression used to protect
				submitted paragraph tags in auto typography.</li>
			<li>Fixed a bug where double dashes within tag attributes were
				being converted to em dash entities.</li>
			<li>Fixed a bug where double spaces within tag attributes were
				being converted to non-breaking space entities.</li>
			<li>Fixed some accuracy issues with curly quotes in
				Typography::format_characters()</li>
			<li>Changed a few docblock comments to reflect actual return
				values.</li>
			<li>Fixed a bug with high ascii characters in subject and from
				email headers.</li>
			<li>Fixed a bug in xss_clean() where whitespace following a
				validated character entity would not be preserved.</li>
			<li>Fixed a bug where HTML comments and &lt;pre&gt; tags were
				being parsed in Typography::auto_typography().</li>
			<li>Fixed a bug with non-breaking space cleanup in
				Typography::auto_typography().</li>
			<li>Fixed a bug in database escaping where a compound statement
				(ie: SUM()) wasn't handled correctly with database prefixes.</li>
			<li>Fixed a bug when an opening quote is preceded by a paragraph
				tag and immediately followed by another tag.</li>
			<li>Fixed a bug in the Text Helper affecting some locales where
				word_censor() would not work on words beginning or ending with an
				accented character.</li>
			<li>Fixed a bug in the Text Helper character limiter where the
				provided limit intersects the last word of the string.</li>
			<li>Fixed a bug (#6342) with plural() in the Inflection helper
				with words ending in "y".</li>
			<li>Fixed bug (#6517) where Routed URI segments returned by
				URI::rsegment() method were incorrect for the default controller.</li>
			<li>Fixed a bug (#6706) in the Security Helper where xss_clean()
				was using a deprecated second argument.</li>
			<li>Fixed a bug in the URL helper url_title() function where
				trailing periods were allowed at the end of a URL.</li>
			<li>Fixed a bug (#6669) in the Email class when CRLF's are used
				for the newline character with headers when used with the "mail"
				protocol.</li>
			<li>Fixed a bug (#6500) where URI::A_filter_uri() was exit()ing
				an error instead of using show_error().</li>
			<li>Fixed a bug (#6592) in the File Helper where
				get_dir_file_info() where recursion was not occurring properly.</li>
			<li>Tweaked Typography::auto_typography() for some edge-cases.</li>
		</ul>


		<h2>Version 1.7</h2>
		<p>
			Release Date: October 23, 2008<br /> Hg Tag: 1.7.0
		</p>

		<ul>
			<li>Libraries
				<ul>
					<li>Added a new <a href="libraries/form_validation.html">Form
							Validation Class</a>. It simplifies setting rules and field names,
						supports arrays as field names, allows groups of validation rules
						to be saved in a config file, and adds some helper functions for
						use in view files. <strong>Please note that the old
							Validation class is now deprecated</strong>. We will leave it in the
						library folder for some time so that existing applications that
						use it will not break, but you are encouraged to migrate to the
						new version.
					</li>
					<li>Updated the <a href="libraries/sessions.html">Sessions
							class</a> so that any custom data being saved gets stored to a
						database rather than the session cookie (assuming you are using a
						database to store session data), permitting much more data to be
						saved.
					</li>
					<li>Added the ability to store libraries in subdirectories
						within either the main "libraries" or the local application
						"libraries" folder. Please see the <a href="libraries/loader.html">Loader
							class</a> for more info.
					</li>
					<li>Added the ability to assign library objects to your own
						variable names when you use <kbd>$this->load->library()</kbd>.
						Please see the <a href="libraries/loader.html">Loader class</a>
						for more info.
					</li>
					<li>Added controller class/method info to <a
						href="general/profiling.html">Profiler class</a> and support for
						multiple database connections.
					</li>
					<li>Improved the "auto typography" feature and moved it out of
						the helper into its own <a href="libraries/typography.html">Typography
							Class</a>.
					</li>
					<li>Improved performance and accuracy of <kbd>xss_clean()</kbd>,
						including reduction of false positives on image/file tests.
					</li>
					<li>Improved <a href="./libraries/parser.html">Parser
							class</a> to allow multiple calls to the parse() function. The output
						of each is appended in the output.
					</li>
					<li>Added <dfn>max_filename</dfn> option to set a file name
						length limit in the <a href="libraries/file_uploading.html">File
							Upload Class</a>.
					</li>
					<li>Added <dfn>set_status_header()</dfn> function to <a
						href="libraries/output.html">Output class</a>.
					</li>
					<li>Modified <a href="libraries/pagination.html">Pagination</a>
						class to only output the "First" link when the link for page one
						would not be shown.
					</li>
					<li>Added support for mb_strlen in the <a
						href="libraries/form_validation.html">Form Validation</a> class so
						that multi-byte languages will calculate string lengths properly.
					</li>
				</ul>
			</li>
			<li>Database
				<ul>
					<li>Improved Active Record class to allow full path column and
						table names: hostname.database.table.column. Also improved the
						alias handling.</li>
					<li>Improved how table and column names are escaped and
						prefixed. It now honors full path names when adding prefixes and
						escaping.</li>
					<li>Added Active Record caching feature to "update" and
						"delete" functions.</li>
					<li>Added removal of non-printing control characters in <kbd>escape_str()</kbd>
						of DB drivers that do not have native PHP escaping mechanisms
						(mssql, oci8, odbc), to avoid potential SQL errors, and possible
						sources of SQL injection.
					</li>
					<li>Added port support to MySQL, MySQLi, and MS SQL database
						drivers.</li>
					<li>Added driver name variable in each DB driver, based on bug
						report #4436.</li>
				</ul>
			</li>
			<li>Helpers
				<ul>
					<li>Added several new "setting" functions to the <a
						href="helpers/form_helper.html">Form helper</a> that allow POST
						data to be retrieved and set into forms. These are intended to be
						used on their own, or with the new <a
						href="libraries/form_validation.html">Form Validation Class</a>.
					</li>
					<li>Added <kbd>current_url()</kbd> and uri_segments() to <a
						href="helpers/url_helper.html">URL helper</a>.
					</li>
					<li>Altered <kbd>auto_link()</kbd> in the <a
						href="helpers/url_helper.html">URL helper</a> so that email
						addresses with "+" included will be linked.
					</li>
					<li>Added <kbd>meta()</kbd> function to <a
						href="helpers/html_helper.html">HTML helper</a>.
					</li>
					<li>Improved accuracy of calculations in <a
						href="helpers/number_helper.html">Number helper</a>.
					</li>
					<li>Removed added newlines ("\n") from most form and html
						helper functions.</li>
					<li>Tightened up validation in the <a
						href="helpers/date_helper.html">Date helper</a> function <kbd>human_to_unix()</kbd>,
						and eliminated the POSIX regex.
					</li>
					<li>Updated <a href="helpers/date_helper.html">Date helper</a>
						to match the world's current time zones and offsets.
					</li>
					<li>Modified url_title() in the <a
						href="helpers/url_helper.html">URL helper</a> to remove characters
						and digits that are part of character entities, to allow dashes,
						underscores, and periods regardless of the $separator, and to
						allow uppercase characters.
					</li>
					<li>Added support for arbitrary attributes in anchor_popup()
						of the <a href="helpers/url_helper.html">URL helper</a>.
					</li>
				</ul>
			</li>
			<li>Other Changes
				<ul>
					<li>Added <a href="./general/styleguide.html">PHP Style
							Guide</a> to docs.
					</li>
					<li>Added sanitization in <kbd>xss_clean()</kbd> for a
						deprecated HTML tag that could be abused in user input in Internet
						Explorer.
					</li>
					<li>Added a few openxml document mime types, and an additional
						mobile agent to mimes.php and user_agents.php respectively.</li>
					<li>Added a file lock check during caching, before trying to
						write to the file.</li>
					<li>Modified Cookie key cleaning to unset a few troublesome
						key names that can be present in certain environments, preventing
						CI from halting execution.</li>
					<li>Changed the output of the profiler to use style attribute
						rather than clear, and added the id "codeigniter_profiler" to the
						container div.</li>
				</ul>
			</li>
		</ul>

		<h3>Bug fixes for 1.7.0</h3>
		<ul>
			<li>Fixed bug in <kbd>xss_clean()</kbd> that could remove some
				desirable tag attributes.
			</li>
			<li>Fixed assorted user guide typos or examples (#4807, #4812,
				#4840, #4862, #4864, #4899, #4930, #5006, #5071, #5158, #5229,
				#5254, #5351).</li>
			<li>Fixed an edit from 1.6.3 that made the $robots array in
				user_agents.php go poof.</li>
			<li>Fixed a bug in the <a href="libraries/email.html">Email
					library</a> with quoted-printable encoding improperly encoding space
				and tab characters.
			</li>
			<li>Modified XSS sanitization to no longer add semicolons after
				&amp;[single letter], such as in M&amp;M's, B&amp;B, etc.</li>
			<li>Modified XSS sanitization to no longer strip XHTML image
				tags of closing slashes.</li>
			<li>Fixed a bug in the Session class when database sessions are
				used where upon session update all userdata would be errantly
				written to the session cookie.</li>
			<li>Fixed a bug (#4536) in backups with the MySQL driver where
				some legacy code was causing certain characters to be double
				escaped.</li>
			<li>Fixed a routing bug (#4661) that occurred when the default
				route pointed to a subfolder.</li>
			<li>Fixed the spelling of "Dhaka" in the <kbd>timezone_menu()</kbd>
				function of the <a href="helpers/date_helper.html">Date helper.</a></li>
			<li>Fixed the spelling of "raspberry" in config/smileys.php.</li>
			<li>Fixed incorrect parenthesis in <kbd>form_open()</kbd>
				function (#5135).
			</li>
			<li>Fixed a bug that was ignoring case when comparing controller
				methods (#4560).</li>
			<li>Fixed a bug (#4615) that was not setting SMTP authorization
				settings when using the initialize function.</li>
			<li>Fixed a bug in <kbd>highlight_code()</kbd> in the <a
				href="helpers/text_helper.html">Text helper</a> that would leave a
				stray &lt;/span&gt; in certain cases.
			</li>
			<li>Fixed Oracle bug (#3306) that was preventing multiple
				queries in one action.</li>
			<li>Fixed ODBC bug that was ignoring connection params due to
				its use of a constructor.</li>
			<li>Fixed a DB driver bug with num_rows() that would cause an
				error with the Oracle driver.</li>
			<li>Fixed MS SQL bug (#4915). Added brackets around database
				name in MS SQL driver when selecting the database, in the event that
				reserved characters are used in the name.</li>
			<li>Fixed a DB caching bug (4718) in which the path was
				incorrect when no URI segments were present.</li>
			<li>Fixed Image_lib class bug #4562. A path was not defined for
				NetPBM.</li>
			<li>Fixed Image_lib class bug #4532. When cropping an image with
				identical height/width settings on output, a copy is made.</li>
			<li>Fixed DB_driver bug (4900), in which a database error was
				not being logged correctly.</li>
			<li>Fixed DB backup bug in which field names were not being
				escaped.</li>
			<li>Fixed a DB Active Record caching bug in which multiple calls
				to cached data were not being honored.</li>
			<li>Fixed a bug in the Session class that was disallowing
				slashes in the serialized array.</li>
			<li>Fixed a Form Validation bug in which the "isset" error
				message was being trigged by the "required" rule.</li>
			<li>Fixed a spelling error in a Loader error message.</li>
			<li>Fixed a bug (5050) with IP validation with empty segments.</li>
			<li>Fixed a bug in which the parser was being greedy if multiple
				identical sets of tags were encountered.</li>
		</ul>

		<h2>Version 1.6.3</h2>
		<p>
			Release Date: June 26, 2008<br /> Hg Tag: v1.6.3
		</p>

		<p>Version 1.6.3 is a security and maintenance release and is
			recommended for all users.</p>
		<ul>
			<li>Database
				<ul>
					<li>Modified MySQL/MySQLi Forge class to give explicit names
						to keys</li>
					<li>Added ability to set multiple column non-primary keys to
						the <a href="database/forge.html">Forge class</a>
					</li>
					<li>Added ability to set additional database config values in
						<a href="database/connecting.html">DSN connections</a> via the
						query string.
					</li>
				</ul>
			</li>
			<li>Libraries
				<ul>
					<li>Set the mime type check in the <a
						href="libraries/file_uploading.html">Upload class</a> to reference
						the global mimes variable.
					</li>
					<li>Added support for query strings to the <a
						href="libraries/pagination.html">Pagination class</a>,
						automatically detected or explicitly declared.
					</li>
					<li>Added <kbd>get_post()</kbd> to the <a
						href="libraries/input.html">Input class</a>.
					</li>
					<li>Documented <kbd>get()</kbd> in the <a
						href="libraries/input.html">Input class</a>.
					</li>
					<li>Added the ability to automatically output language items
						as form labels in the <a href="libraries/language.html">Language
							class</a>.
					</li>
				</ul>
			</li>
			<li>Helpers
				<ul>
					<li>Added a <a href="helpers/language_helper.html">Language
							helper</a>.
					</li>
					<li>Added a <a href="helpers/number_helper.html">Number
							helper</a>.
					</li>
					<li><a href="helpers/form_helper.html">Form helper</a>
						refactored to allow <kbd>form_open()</kbd> and <kbd>form_fieldset()</kbd>
						to accept arrays or strings as arguments.</li>
				</ul>
			</li>
			<li>Other changes
				<ul>
					<li>Improved security in <kbd>xss_clean()</kbd>.
					</li>
					<li>Removed an unused Router reference in <kbd>_display_cache()</kbd>.
					</li>
					<li>Added ability to <a href="libraries/input.html">use
							xss_clean() to test images</a> for XSS, useful for upload security.
					</li>
					<li>Considerably expanded list of mobile user-agents in
						config/user_agents.php.</li>
					<li>Charset information in the userguide has been moved above
						title for internationalization purposes (#4614).</li>
					<li>Added &quot;Using Associative Arrays In a Request
						Parameter&quot; example to the <a href="libraries/xmlrpc.html">XMLRPC
							userguide page</a>.
					</li>
					<li>Removed maxlength and size as automatically added
						attributes of form_input() in the <a
						href="helpers/form_helper.html">form helper</a>.
					</li>
					<li>Documented the language file use of <kbd>byte_format()</kbd>
						in the <a href="helpers/number_helper.html">number helper</a>.
					</li>
				</ul>
			</li>
		</ul>


		<h3>Bug fixes for 1.6.3</h3>

		<ul>
			<li>Added a language key for valid_emails in
				validation_lang.php.</li>
			<li>Amended fixes for bug (#3419) with parsing DSN database
				connections.</li>
			<li>Moved the <kbd>_has_operators()</kbd> function (#4535) into
				DB_driver from DB_active_rec.
			</li>
			<li>Fixed a syntax error in upload_lang.php.</li>
			<li>Fixed a bug (#4542) with a regular expression in the Image
				library.</li>
			<li>Fixed a bug (#4561) where <kbd>orhaving()</kbd> wasn't
				properly passing values.
			</li>
			<li>Removed some unused variables from the code (#4563).</li>
			<li>Fixed a bug where <kbd>having()</kbd> was not adding an =
				into the statement (#4568).
			</li>
			<li>Fixed assorted user guide typos or examples (#4574, #4706).</li>
			<li>Added quoted-printable headers to Email class when the
				multi-part override is used.</li>
			<li>Fixed a double opening &lt;p&gt; tag in the index pages of
				each system directory.</li>
		</ul>

		<h2>Version 1.6.2</h2>
		<p>
			Release Date: May 13, 2008<br /> Hg Tag: 1.6.2
		</p>
		<ul>
			<li>Active Record
				<ul>
					<li>Added the ability to prevent escaping in <kbd>having()</kbd>
						clauses.
					</li>
					<li>Added <kbd>rename_table()</kbd> into <a
						href="./database/forge.html">DBForge</a>.
					</li>
					<li>Fixed a bug that wasn't allowing escaping to be turned off
						if the value of a query was NULL.</li>
					<li>DB Forge is now assigned to any models that exist after
						loading (#3457).</li>
				</ul>
			</li>
			<li>Database
				<ul>
					<li>Added <a href="./database/transactions.html">Strict
							Mode</a> to database transactions.
					</li>
					<li>Escape behaviour in where() clauses has changed; values in
						those with the &quot;FALSE&quot; argument are no longer escaped
						(ie: quoted).</li>
				</ul>
			</li>
			<li>Config
				<ul>
					<li>Added 'application/vnd.ms-powerpoint' to list of mime
						types.</li>
					<li>Added 'audio/mpg' to list of mime types.</li>
					<li>Added new user-modifiable file constants.php containing
						file mode and fopen constants.</li>
					<li>Added the ability to set CRLF settings via config in the <a
						href="libraries/email.html">Email</a> class.
					</li>
				</ul>
			</li>
			<li>Libraries
				<ul>
					<li>Added increased security for filename handling in the
						Upload library.</li>
					<li>Added increased security for sessions for client-side data
						tampering.</li>
					<li>The MySQLi forge class is now in sync with MySQL forge.</li>
					<li>Added the ability to set CRLF settings via config in the <a
						href="libraries/email.html">Email</a> class.
					</li>
					<li><a href="libraries/unit_testing.html">Unit Testing</a>
						results are now colour coded, and a change was made to the default
						template of results.</li>
					<li>Added a valid_emails rule to the Validation class.</li>
					<li>The <a href="libraries/zip.html">Zip class</a> now exits
						within <kbd>download()</kbd>.
					</li>
					<li>The <a href="libraries/zip.html">Zip class</a> has
						undergone a substantial re-write for speed and clarity (thanks
						stanleyxu for the hard work and code contribution in bug report
						#3425!)
					</li>
				</ul>
			</li>
			<li>Helpers
				<ul>
					<li>Added a <a href="helpers/compatibility_helper.html">Compatibility
							Helper</a> for using some common PHP 5 functions safely in
						applications that might run on PHP 4 servers (thanks Seppo for the
						hard work and code contribution!)
					</li>
					<li>Added <kbd>form_button()</kbd> in the <a
						href="helpers/form_helper.html">Form helper</a>.
					</li>
					<li>Changed the <kbd>radio()</kbd> and <kbd>checkbox()</kbd>
						functions to default to not checked by default.
					</li>
					<li>Added the ability to include an optional HTTP Response
						Code in the <kbd>redirect()</kbd> function of the <a
						href="helpers/url_helper.html">URL Helper</a>.
					</li>
					<li>Modified <kbd>img()</kbd> in the <a
						href="helpers/html_helper.html">HTML Helper</a> to remove an
						unneeded space (#4208).
					</li>
					<li>Modified <kbd>anchor()</kbd> in the <a
						href="helpers/url_helper.html">URL helper</a> to no longer add a
						default title= attribute (#4209).
					</li>
					<li>The <a href="helpers/download_helper.html">Download
							helper</a> now exits within <kbd>force_download()</kbd>.
					</li>
					<li>Added <kbd>get_dir_file_info()</kbd>, <kbd>get_file_info()</kbd>,
						and <kbd>get_mime_by_extension()</kbd> to the <a
						href="helpers/file_helper.html">File Helper</a>.
					</li>
					<li>Added <kbd>symbolic_permissions()</kbd> and <kbd>octal_permissions()</kbd>
						to the <a href='helpers/file_helper.html'>File helper</a>.
					</li>
				</ul>
			</li>
			<li>Plugins
				<ul>
					<li>Modified captcha generation to first look for the function
						imagecreatetruecolor, and fallback to imagecreate if it isn't
						available (#4226).</li>
				</ul>
			</li>
			<li>Other Changes
				<ul>
					<li>Added ability for <a href="libraries/input.html">xss_clean()</a>
						to accept arrays.
					</li>
					<li>Removed closing PHP tags from all PHP files to avoid
						accidental output and potential 'cannot modify headers' errors.</li>
					<li>Removed &quot;scripts&quot; from the auto-load search
						path. Scripts were deprecated in Version 1.4.1 (September 21,
						2006). If you still need to use them for legacy reasons, they must
						now be manually loaded in each Controller.</li>
					<li>Added a <a href="general/reserved_names.html">Reserved
							Names</a> page to the userguide, and migrated reserved controller
						names into it.
					</li>
					<li>Added a <a href="general/common_functions.html">Common
							Functions</a> page to the userguide for globally available functions.
					</li>
					<li>Improved security and performance of xss_clean().</li>
				</ul>
			</li>
		</ul>

		<h3>Bugfixes for 1.6.2</h3>
		<ul>
			<li>Fixed a bug where SET queries were not being handled as
				"write" queries.</li>
			<li>Fixed a bug (#3191) with ORIG_PATH_INFO URI parsing.</li>
			<li>Fixed a bug in DB Forge, when inserting an id field (#3456).</li>
			<li>Fixed a bug in the table library that could cause
				identically constructed rows to be dropped (#3459).</li>
			<li>Fixed DB Driver and MySQLi result driver checking for
				resources instead of objects (#3461).</li>
			<li>Fixed an AR_caching error where it wasn't tracking table
				aliases (#3463).</li>
			<li>Fixed a bug in AR compiling, where select statements with
				arguments got incorrectly escaped (#3478).</li>
			<li>Fixed an incorrect documentation of
				$this-&gt;load-&gt;language (#3520).</li>
			<li>Fixed bugs (#3523, #4350) in get_filenames() with recursion
				and problems with Windows when $include_path is used.</li>
			<li>Fixed a bug (#4153) in the XML-RPC class preventing
				dateTime.iso8601 from being used.</li>
			<li>Fixed an AR bug with or_where_not_in() (#4171).</li>
			<li>Fixed a bug with <a href="libraries/input.html">xss_clean()</a>
				that would add semicolons to GET URI variable strings.
			</li>
			<li>Fixed a bug (#4206) in the Directory Helper where the
				directory resource was not being closed, and minor improvements.</li>
			<li>Fixed a bug in the FTP library where delete_dir() was not
				working recursively (#4215).</li>
			<li>Fixed a Validation bug when set_rules() is used with a
				non-array field name and rule (#4220).</li>
			<li>Fixed a bug (#4223) where DB caching would not work for
				returned DB objects or multiple DB connections.</li>
			<li>Fixed a bug in the Upload library that might output the same
				error twice (#4390).</li>
			<li>Fixed an AR bug when joining with a table alias and table
				prefix (#4400).</li>
			<li>Fixed a bug in the DB class testing the $params argument.</li>
			<li>Fixed a bug in the Table library where the integer 0 in cell
				data would be displayed as a blank cell.</li>
			<li>Fixed a bug in <kbd>link_tag()</kbd> of the <a
				href="helpers/url_helper.html">URL helper</a> where a key was passed
				instead of a value.
			</li>
			<li>Fixed a bug in DB_result::row() that prevented it from
				returning individual fields with MySQL NULL values.</li>
			<li>Fixed a bug where SMTP emails were not having dot
				transformation performed on lines that begin with a dot.</li>
			<li>Fixed a bug in display_error() in the DB driver that was
				instantiating new Language and Exception objects, and not using the
				error heading.</li>
			<li>Fixed a bug (#4413) where a URI containing slashes only e.g.
				'http://example.com/index.php?//' would result in PHP errors</li>
			<li>Fixed an array to string conversion error in the Validation
				library (#4425)</li>
			<li>Fixed bug (#4451, #4299, #4339) where failed transactions
				will not rollback when debug mode is enabled.</li>
			<li>Fixed a bug (#4506) with overlay_watermark() in the Image
				library preventing support for PNG-24s with alpha transparency</li>
			<li>Fixed assorted user guide typos (#3453, #4364, #4379, #4399,
				#4408, #4412, #4448, #4488).</li>
		</ul>

		<h2>Version 1.6.1</h2>
		<p>
			Release Date: February 12, 2008<br /> Hg Tag: 1.6.1
		</p>
		<ul>
			<li>Active Record
				<ul>
					<li>Added <a href="./database/active_record.html#caching">Active
							Record Caching</a>.
					</li>
					<li>Made Active Record fully database-prefix aware.</li>
				</ul>
			</li>
			<li>Database drivers
				<ul>
					<li>Added support for setting client character set and
						collation for MySQLi.</li>
				</ul>
			</li>
			<li>Core Changes
				<ul>
					<li>Modified <kbd>xss_clean()</kbd> to be more intelligent
						with its handling of URL encoded strings.
					</li>
					<li>Added $_SERVER, $_FILES, $_ENV, and $_SESSION to
						sanitization of globals.</li>
					<li>Added a <a href="./helpers/path_helper.html">Path
							Helper</a>.
					</li>
					<li>Simplified <kbd>_reindex_segments()</kbd> in the URI
						class.
					</li>
					<li>Escaped the '-' in the default 'permitted_uri_chars'
						config item, to prevent errors if developers just try to add
						additional characters to the end of the default expression.</li>
					<li>Modified method calling to controllers to show a 404 when
						a private or protected method is accessed via a URL.</li>
					<li>Modified framework initiated 404s to log the controller
						and method for invalid requests.</li>
				</ul>
			</li>
			<li>Helpers
				<ul>
					<li>Modified <kbd>get_filenames()</kbd> in the File Helper to
						return FALSE if the $source_dir is not readable.
					</li>
				</ul>
			</li>
		</ul>


		<h3>Bugfixes for 1.6.1</h3>
		<ul>
			<li>Deprecated is_numeric as a validation rule. Use of numeric
				and integer are preferred.</li>
			<li>Fixed bug (#3379) in DBForge with SQLite for table creation.</li>
			<li>Made Active Record fully database prefix aware (#3384).</li>
			<li>Fixed a bug where DBForge was outputting invalid SQL in
				Postgres by adding brackets around the tables in FROM.</li>
			<li>Changed the behaviour of Active Record's update() to make
				the WHERE clause optional (#3395).</li>
			<li>Fixed a bug (#3396) where certain POST variables would cause
				a PHP warning.</li>
			<li>Fixed a bug in query binding (#3402).</li>
			<li>Changed order of SQL keywords in the Profiler $highlight
				array so OR would not be highlighted before ORDER BY.</li>
			<li>Fixed a bug (#3404) where the MySQLi driver was testing if
				$this->conn_id was a resource instead of an object.</li>
			<li>Fixed a bug (#3419) connecting to a database via a DSN
				string.</li>
			<li>Fixed a bug (#3445) where the routed segment array was not
				re-indexed to begin with 1 when the default controller is used.</li>
			<li>Fixed assorted user guide typos.</li>
		</ul>



		<h2>Version 1.6.0</h2>
		<p>Release Date: January 30, 2008</p>
		<ul>
			<li>DBForge
				<ul>
					<li>Added <a href="./database/forge.html">DBForge</a> to the
						database tools.
					</li>
					<li>Moved <kbd>create_database()</kbd> and <kbd>drop_database()</kbd>
						into <a href="./database/forge.html">DBForge</a>.
					</li>
					<li>Added <kbd>add_field()</kbd>, <kbd>add_key()</kbd>, <kbd>create_table()</kbd>,
						<kbd>drop_table()</kbd>, <kbd>add_column()</kbd>, <kbd>drop_column()</kbd>,
						<kbd>modify_column()</kbd> into <a href="./database/forge.html">DBForge</a>.
					</li>
				</ul>
			</li>

			<li>Active Record
				<ul>
					<li>Added <kbd>protect_identifiers()</kbd> in <a
						href="./database/active_record.html">Active Record</a>.
					</li>
					<li>All AR queries are backticked if appropriate to the
						database.</li>
					<li>Added <kbd>where_in()</kbd>, <kbd>or_where_in()</kbd>, <kbd>where_not_in()</kbd>,
						<kbd>or_where_not_in()</kbd>, <kbd>not_like()</kbd> and <kbd>or_not_like()</kbd>
						to <a href="./database/active_record.html">Active Record</a>.
					</li>
					<li>Added support for <kbd>limit()</kbd> into <kbd>update()</kbd>
						and <kbd>delete()</kbd> statements in <a
						href="./database/active_record.html">Active Record</a>.
					</li>
					<li>Added <kbd>empty_table()</kbd> and <kbd>truncate_table()</kbd>
						to <a href="./database/active_record.html">Active Record</a>.
					</li>
					<li>Added the ability to pass an array of tables to the <kbd>delete()</kbd>
						statement in <a href="./database/active_record.html">Active
							Record</a>.
					</li>
					<li>Added <kbd>count_all_results()</kbd> function to <a
						href="./database/active_record.html">Active Record</a>.
					</li>
					<li>Added <kbd>select_max()</kbd>, <kbd>select_min()</kbd>, <kbd>select_avg()</kbd>
						and <kbd>select_sum()</kbd> to <a
						href="./database/active_record.html">Active Record</a>.
					</li>
					<li>Added the ability to use aliases with joins in <a
						href="./database/active_record.html">Active Record</a>.
					</li>
					<li>Added a third parameter to Active Record's <kbd>like()</kbd>
						clause to control where the wildcard goes.
					</li>
					<li>Added a third parameter to <kbd>set()</kbd> in <a
						href="./database/active_record.html">Active Record</a> that
						withholds escaping data.
					</li>
					<li>Changed the behaviour of variables submitted to the
						where() clause with no values to auto set &quot;IS NULL&quot;</li>
				</ul>
			</li>

			<li>Other Database Related
				<ul>
					<li>MySQL driver now requires MySQL 4.1+</li>
					<li>Added $this->DB->save_queries variable to DB driver,
						enabling queries to get saved or not. Previously they were always
						saved.</li>
					<li>Added $this->db->dbprefix() to manually add database
						prefixes.</li>
					<li>Added 'random' as an <kbd>order_by()</kbd> option , and
						removed &quot;rand()&quot; as a listed option as it was MySQL
						only.
					</li>
					<li>Added a check for NULL fields in the MySQL database backup
						utility.</li>
					<li>Added &quot;constrain_by_prefix&quot; parameter to
						db-&gt;list_table() function. If set to TRUE it will limit the
						result to only table names with the current prefix.</li>
					<li>Deprecated from Active Record; <kbd>getwhere()</kbd> for <kbd>get_where()</kbd>;
						<kbd>groupby()</kbd> for <kbd>group_by()</kbd>; <kbd>havingor()</kbd>
						for <kbd>having_or()</kbd>; <kbd>orderby()</kbd> for <kbd>order_by</kbd>;
						<kbd>orwhere()</kbd> for <kbd>or_where()</kbd>; and <kbd>orlike()</kbd>
						for <kbd>or_like()</kbd>.
					</li>
					<li>Modified <kbd>csv_from_result()</kbd> to output CSV data
						more in the spirit of basic rules of RFC 4180.
					</li>
					<li>Added 'char_set' and 'dbcollat' database configuration
						settings, to explicitly set the client communication properly.</li>
					<li>Removed 'active_r' configuration setting and replaced with
						a global $active_record setting, which is more in harmony with the
						global nature of the behavior (#1834).</li>
				</ul>
			</li>

			<li>Core changes
				<ul>
					<li>Added ability to load multiple views, whose content will
						be appended to the output in the order loaded.</li>
					<li>Added the ability to <a href="./general/autoloader.html">auto-load</a>
						<a href="./general/models.html">Models</a>.
					</li>
					<li>Reorganized the URI and Routes classes for better clarity.</li>
					<li>Added Compat.php to allow function overrides for older
						versions of PHP or PHP environments missing certain extensions /
						libraries</li>
					<li>Added memory usage, GET, URI string data, and individual
						query execution time to Profiler output.</li>
					<li>Deprecated Scaffolding.</li>
					<li>Added is_really_writable() to Common.php to provide a
						cross-platform reliable method of testing file/folder writability.</li>
				</ul>
			</li>

			<li>Libraries
				<ul>
					<li>Changed the load protocol of Models to allow for
						extension.</li>
					<li>Strengthened the Encryption library to help protect
						against man in the middle attacks when MCRYPT_MODE_CBC mode is
						used.</li>
					<li>Added Flashdata variables, session_id regeneration and
						configurable session update times to the <a
						href="./libraries/sessions.html">Session class.</a>
					</li>
					<li>Removed 'last_visit' from the Session class.</li>
					<li>Added a language entry for valid_ip validation error.</li>
					<li>Modified prep_for_form() in the Validation class to accept
						arrays, adding support for POST array validation (via callbacks
						only)</li>
					<li>Added an &quot;integer&quot; rule into the Validation
						library.</li>
					<li>Added valid_base64() to the Validation library.</li>
					<li>Documented clear() in the <a
						href="../libraries/image_lib.html">Image Processing</a> library.
					</li>
					<li>Changed the behaviour of custom callbacks so that they no
						longer trigger the &quot;required&quot; rule.</li>
					<li>Modified Upload class $_FILES error messages to be more
						precise.</li>
					<li>Moved the safe mode and auth checks for the Email library
						into the constructor.</li>
					<li>Modified variable names in _ci_load() method of Loader
						class to avoid conflicts with view variables.</li>
					<li>Added a few additional mime type variations for CSV.</li>
					<li>Enabled the 'system' methods for the XML-RPC Server
						library, except for 'system.multicall' which is still disabled.</li>
				</ul>
			</li>

			<li>Helpers &amp; Plugins
				<ul>
					<li>Added link_tag() to the <a
						href="./helpers/html_helper.html">HTML helper.</a></li>
					<li>Added img() to the <a href="./helpers/html_helper.html">HTML
							helper.</a></li>
					<li>Added ability to <a href="./general/helpers.html">"extend"
							Helpers</a>.
					</li>
					<li>Added an <a href="./helpers/email_helper.html">email
							helper</a> into core helpers.
					</li>
					<li>Added <kbd>strip_quotes()</kbd> function to <a
						href="./helpers/string_helper.html">string helper</a>.
					</li>
					<li>Added <kbd>reduce_multiples()</kbd> function to <a
						href="./helpers/string_helper.html">string helper</a>.
					</li>
					<li>Added <kbd>quotes_to_entities()</kbd> function to <a
						href="./helpers/string_helper.html">string helper</a>.
					</li>
					<li>Added <kbd>form_fieldset()</kbd>, <kbd>form_fieldset_close()</kbd>,
						<kbd>form_label()</kbd>, and <kbd>form_reset()</kbd> function to <a
						href="./helpers/form_helper.html">form helper</a>.
					</li>
					<li>Added support for external urls in <kbd>form_open()</kbd>.
					</li>
					<li>Removed support for db_backup in MySQLi due to
						incompatible functions.</li>
					<li>Javascript Calendar plugin now uses the months and days
						from the calendar language file, instead of hard-coded values,
						internationalizing it.</li>
				</ul>
			</li>


			<li>Documentation Changes
				<ul>
					<li>Added <a href="./doc_style/index.html">Writing
							Documentation</a> section for the community to use in writing their
						own documentation.
					</li>
					<li>Added titles to all user manual pages.</li>
					<li>Added attributes into &lt;html&gt; of userguide for valid
						html.</li>
					<li>Added <a
						href="http://codeigniter.com/user_guide/libraries/zip.html">Zip
							Encoding Class</a> to the table of contents of the userguide.
					</li>
					<li>Moved part of the userguide menu javascript to an external
						file.</li>
					<li>Documented <kbd>distinct()</kbd> in <a
						href="./database/active_record.html">Active Record</a>.
					</li>
					<li>Documented the <kbd>timezones()</kbd> function in the <a
						href="./helpers/date_helper.html">Date Helper</a>.
					</li>
					<li>Documented unset_userdata in the <a
						href="./libraries/sessions.html">Session class</a>.
					</li>
					<li>Documented 2 config options to the <a
						href="./database/configuration.html">Database configuration</a>
						page.
					</li>
				</ul>
			</li>
		</ul>

		<h3>Bug fixes for Version 1.6.0</h3>

		<ul>
			<li>Fixed a bug (#1813) preventing using $CI->db in the same
				application with returned database objects.</li>
			<li>Fixed a bug (#1842) where the $this->uri->rsegments array
				would not include the 'index' method if routed to the controller
				without an implicit method.</li>
			<li>Fixed a bug (#1872) where word_limiter() was not retaining
				whitespace.</li>
			<li>Fixed a bug (#1890) in csv_from_result() where content that
				included the delimiter would break the file.</li>
			<li>Fixed a bug (#2542)in the clean_email() method of the Email
				class to allow for non-numeric / non-sequential array keys.</li>
			<li>Fixed a bug (#2545) in <kbd>_html_entity_decode_callback()</kbd>
				when 'global_xss_filtering' is enabled.
			</li>
			<li>Fixed a bug (#2668) in the <a href="./libraries/parser.html">parser
					class</a> where numeric data was ignored.
			</li>
			<li>Fixed a bug (#2679) where the &quot;previous&quot;
				pagination link would get drawn on the first page.</li>
			<li>Fixed a bug (#2702) in _object_to_array that broke some
				types of inserts and updates.</li>
			<li>Fixed a bug (#2732) in the SQLite driver for PHP 4.</li>
			<li>Fixed a bug (#2754) in Pagination to scan for non-positive
				num_links.</li>
			<li>Fixed a bug (#2762) in the <a
				href="./libraries/sessions.html">Session library</a> where user
				agent matching would fail on user agents ending with a space.
			</li>
			<li>Fixed a bug (#2784) $field_names[] vs $Ffield_names[] in
				postgres and sqlite drivers.</li>
			<li>Fixed a bug (#2810) in the typography helper causing
				extraneous paragraph tags when string contains tags.</li>
			<li>Fixed a bug (#2849) where arguments passed to a subfolder
				controller method would be incorrectly shifted, dropping the 3rd
				segment value.</li>
			<li>Fixed a bug (#2858) which referenced a wrong variable in the
				Image class.</li>
			<li>Fixed a bug (#2875)when loading plugin files as _plugin. and
				not _pi.</li>
			<li>Fixed a bug (#2912) in <kbd>get_filenames()</kbd> in the <a
				href="./helpers/file_helper.html">File Helper </a>where the array
				wasn't cleared after each call.
			</li>
			<li>Fixed a bug (#2974) in <kbd>highlight_phrase()</kbd> that
				caused an error with slashes.
			</li>
			<li>Fixed a bug (#3003) in the Encryption Library to support
				modes other than MCRYPT_MODE_ECB</li>
			<li>Fixed a bug (#3015) in the <a
				href="./libraries/user_agent.html">User Agent library</a> where more
				then 2 languages where not reported with languages().
			</li>
			<li>Fixed a bug (#3017) in the <a href="./libraries/email.html">Email</a>
				library where some timezones were calculated incorrectly.
			</li>
			<li>Fixed a bug (#3024) in which master_dim wasn't getting reset
				by clear() in the Image library.</li>
			<li>Fixed a bug (#3156) in Text Helper highlight_code() causing
				PHP tags to be handled incorrectly.</li>
			<li>Fixed a bug (#3166) that prevented num_rows from working in
				Oracle.</li>
			<li>Fixed a bug (#3175) preventing certain libraries from
				working properly when autoloaded in PHP 4.</li>
			<li>Fixed a bug (#3267) in the Typography Helper where unordered
				list was listed &quot;un.</li>
			<li>Fixed a bug (#3268) where the Router could leave '/' as the
				path.</li>
			<li>Fixed a bug (#3279) where the Email class was sending the
				wrong Content-Transfer-Encoding for some character sets.</li>
			<li>Fixed a bug (#3284) where the rsegment array would not be
				set properly if the requested URI contained more segments than the
				routed URI.</li>
			<li>Removed extraneous load of $CFG in _display_cache() of the
				Output class (#3285).</li>
			<li>Removed an extraneous call to loading models (#3286).</li>
			<li>Fixed a bug (#3310) with sanitization of globals in the
				Input class that could unset CI's global variables.</li>
			<li>Fixed a bug (#3314) which would cause the top level path to
				be deleted in delete_files() of the File helper.</li>
			<li>Fixed a bug (#3328) where the smiley helper might return an
				undefined variable.</li>
			<li>Fixed a bug (#3330) in the FTP class where a comparison
				wasn't getting made.</li>
			<li>Removed an unused parameter from Profiler (#3332).</li>
			<li>Fixed a bug in database driver where num_rows property
				wasn't getting updated.</li>
			<li>Fixed a bug in the <a href="./libraries/file_uploading.html">upload
					library</a> when allowed_files wasn't defined.
			</li>
			<li>Fixed a bug in <kbd>word_wrap()</kbd> of the Text Helper
				that incorrectly referenced an object.
			</li>
			<li>Fixed a bug in Validation where <kbd>valid_ip()</kbd> wasn't
				called properly.
			</li>
			<li>Fixed a bug in Validation where individual error messages
				for checkboxes wasn't supported.</li>
			<li>Fixed a bug in captcha calling an invalid PHP function.</li>
			<li>Fixed a bug in the cookie helper "set_cookie" function. It
				was not honoring the config settings.</li>
			<li>Fixed a bug that was making validation callbacks required
				even when not set as such.</li>
			<li>Fixed a bug in the XML-RPC library so if a type is
				specified, a more intelligent decision is made as to the default
				type.</li>
			<li>Fixed an example of comma-separated emails in the email
				library documentation.</li>
			<li>Fixed an example in the Calendar library for Showing
				Next/Previous Month Links.</li>
			<li>Fixed a typo in the database language file.</li>
			<li>Fixed a typo in the image language file &quot;suppor&quot;
				to &quot;support&quot;.</li>
			<li>Fixed an example for XML RPC.</li>
			<li>Fixed an example of <kbd>accept_charset()</kbd> in the <a
				href="./libraries/user_agent.html">User Agent Library</a>.
			</li>
			<li>Fixed a typo in the docblock comments that had CodeIgniter
				spelled CodeIgnitor.</li>
			<li>Fixed a typo in the <a href="./helpers/string_helper.html">String
					Helper</a> (uniquid changed to uniqid).
			</li>
			<li>Fixed typos in the email Language class
				(email_attachment_unredable, email_filed_smtp_login), and FTP Class
				(ftp_unable_to_remame).</li>
			<li>Added a stripslashes() into the Upload Library.</li>
			<li>Fixed a series of grammatical and spelling errors in the
				language files.</li>
			<li>Fixed assorted user guide typos.</li>
		</ul>
		<h2>Version 1.5.4</h2>
		<p>Release Date: July 12, 2007</p>
		<ul>
			<li>Added <a href="./libraries/language.html">custom
					Language files</a> to the <a href="./general/autoloader.html">autoload</a>
				options.
			</li>
			<li>Added stripslashes() to the _clean_input_data() function in
				the <a href="./libraries/input.html">Input class</a> when magic
				quotes is on so that data will always be un-slashed within the
				framework.
			</li>
			<li>Added array to string into the <a
				href="general/profiling.html">profiler</a>.
			</li>
			<li>Added some additional mime types in
				application/config/mimes.php.</li>
			<li>Added filename_security() method to <a
				href="./libraries/input.html">Input library</a>.
			</li>
			<li>Added some additional arguments to the <a
				href="./helpers/inflector_helper.html">Inflection helper</a>
				singular() to compensate for words ending in "s". Also added a force
				parameter to pluralize().
			</li>
			<li>Added $config['charset'] to the config file. Default value
				is 'UTF-8', used in some string handling functions.</li>
			<li>Fixed MSSQL insert_id().</li>
			<li>Fixed a logic error in the DB trans_status() function. It
				was incorrectly returning TRUE on failure and FALSE on success.</li>
			<li>Fixed a bug that was allowing multiple load attempts on
				extended classes.</li>
			<li>Fixed a bug in the bootstrap file that was incorrectly
				attempting to discern the full server path even when it was
				explicity set by the user.</li>
			<li>Fixed a bug in the escape_str() function in the MySQL
				driver.</li>
			<li>Fixed a typo in the <a href="./libraries/calendar.html">Calendar
					library </a>
			</li>
			<li>Fixed a typo in rpcs.php library</li>
			<li>Fixed a bug in the <a href="./libraries/zip.html">Zip
					library</a>, providing PC Zip file compatibility with Mac OS X
			</li>
			<li>Fixed a bug in router that was ignoring the scaffolding
				route for optimization</li>
			<li>Fixed an IP validation bug.</li>
			<li>Fixed a bug in display of POST keys in the <a
				href="./general/profiling.html">Profiler</a> output
			</li>
			<li>Fixed a bug in display of queries with characters that would
				be interpreted as HTML in the <a href="./general/profiling.html">Profiler</a>
				output
			</li>
			<li>Fixed a bug in display of Email class print debugger with
				characters that would be interpreted as HTML in the debugging output</li>
			<li>Fixed a bug in the Content-Transfer-Encoding of HTML emails
				with the quoted-printable MIME type</li>
			<li>Fixed a bug where one could unset certain PHP superglobals
				by setting them via GET or POST data</li>
			<li>Fixed an undefined function error in the insert_id()
				function of the PostgreSQL driver</li>
			<li>Fixed various doc typos.</li>
			<li>Documented two functions from the <a
				href="./helpers/string_helper.html">String helper </a> that were
				missing from the user guide: trim_slashes() and
				reduce_double_slashes().
			</li>
			<li>Docs now validate to XHTML 1 transitional</li>
			<li>Updated the XSS Filtering to take into account the IE
				expression() ability and improved certain deletions to prevent
				possible exploits</li>
			<li>Modified the Router so that when Query Strings are Enabled,
				the controller trigger and function trigger values are sanitized for
				filename include security.</li>
			<li>Modified the is_image() method in the Upload library to take
				into account Windows IE 6/7 eccentricities when dealing with MIMEs</li>
			<li>Modified XSS Cleaning routine to be more performance
				friendly and compatible with PHP 5.2's new PCRE backtrack and
				recursion limits.</li>
			<li>Modified the <a href="./helpers/url_helper.html">URL
					Helper</a> to type cast the $title as a string in case a numeric value
				is supplied
			</li>
			<li>Modified Form Helper form_dropdown() to type cast the keys
				and values of the options array as strings, allowing numeric values
				to be properly set as 'selected'</li>
			<li>Deprecated the use if <kbd>is_numeric()</kbd> in various
				places since it allows periods. Due to compatibility problems with <kbd>ctype_digit()</kbd>,
				making it unreliable in some installations, the following regular
				expression was used instead: <kbd>preg_match("/[^0-9]/", $n)</kbd></li>
			<li>Deprecated: APPVER has been deprecated and replaced with
				CI_VERSION for clarity.</li>
		</ul>
		<h2>Version 1.5.3</h2>
		<p>Release Date: April 15, 2007</p>
		<ul>
			<li>Added array to string into the profiler</li>
			<li>Code Igniter references updated to CodeIgniter</li>
			<li>pMachine references updated to EllisLab</li>
			<li>Fixed a bug in the repeater function of <a
				href="./helpers/string_helper.html">string helper</a>.
			</li>
			<li>Fixed a bug in ODBC driver</li>
			<li>Fixed a bug in result_array() that was returning an empty
				array when no result is produced.</li>
			<li>Fixed a bug in the redirect function of the <a
				href="./helpers/url_helper.html">url helper</a>.
			</li>
			<li>Fixed an undefined variable in Loader</li>
			<li>Fixed a version bug in the Postgres driver</li>
			<li>Fixed a bug in the textarea function of the form helper for
				use with strings</li>
			<li>Fixed doc typos.</li>
		</ul>
		<h2>Version 1.5.2</h2>
		<p>Release Date: February 13, 2007</p>
		<ul>
			<li>Added <a href="./installation/downloads.html#svn">subversion
					information</a> to the <a href="./installation/downloads.html">downloads</a>
				page.
			</li>
			<li>Added support for captions in the <a
				href="./libraries/table.html">Table Library</a>
			</li>
			<li>Fixed a bug in the <a href="./helpers/download_helper.html">download_helper</a>
				that was causing Internet Explorer to load rather than download
			</li>
			<li>Fixed a bug in the Active Record Join function that was not
				taking table prefixes into consideration.</li>
			<li>Removed unescaped variables in error messages of Input and
				Router classes</li>
			<li>Fixed a bug in the Loader that was causing errors on
				Libraries loaded twice. A debug message is now silently made in the
				log.</li>
			<li>Fixed a bug in the <a href="./helpers/form_helper.html">form
					helper</a> that gave textarea a value attribute
			</li>
			<li>Fixed a bug in the <a href="./libraries/image_lib.php">Image
					Library</a> that was ignoring resizing the same size image
			</li>
			<li>Fixed some doc typos.</li>
		</ul>


		<h2>Version 1.5.1</h2>
		<p>Release Date: November 23, 2006</p>
		<ul>
			<li>Added support for submitting arrays of libraries in the
				$this-&gt;load-&gt;library function.</li>
			<li>Added support for naming custom library files in lower or
				uppercase.</li>
			<li>Fixed a bug related to output buffering.</li>
			<li>Fixed a bug in the active record class that was not
				resetting query data after a completed query.</li>
			<li>Fixed a bug that was suppressing errors in controllers.</li>
			<li>Fixed a problem that can cause a loop to occur when the
				config file is missing.</li>
			<li>Fixed a bug that occurred when multiple models were loaded
				with the third parameter set to TRUE.</li>
			<li>Fixed an oversight that was not unsetting globals properly
				in the input sanitize function.</li>
			<li>Fixed some bugs in the Oracle DB driver.</li>
			<li>Fixed an incorrectly named variable in the MySQLi result
				driver.</li>
			<li>Fixed some doc typos.</li>
		</ul>
		<h2>Version 1.5.0.1</h2>
		<p>Release Date: October 31, 2006</p>
		<ul>
			<li>Fixed a problem in which duplicate attempts to load helpers
				and classes were not being stopped.</li>
			<li>Fixed a bug in the word_wrap() helper function.</li>
			<li>Fixed an invalid color Hex number in the Profiler class.</li>
			<li>Fixed a corrupted image in the user guide.</li>
		</ul>



		<h2>Version 1.5.0</h2>
		<p>Release Date: October 30, 2006</p>

		<ul>
			<li>Added <a href="./database/utilities.html">DB utility
					class</a>, permitting DB backups, CVS or XML files from DB results, and
				various other functions.
			</li>
			<li>Added <a href="./database/caching.html">Database Caching
					Class</a>.
			</li>
			<li>Added <a href="./database/transactions.html">transaction
					support</a> to the database classes.
			</li>
			<li>Added <a href="./general/profiling.html">Profiler Class</a>
				which generates a report of Benchmark execution times, queries, and
				POST data at the bottom of your pages.
			</li>
			<li>Added <a href="./libraries/user_agent.html">User Agent
					Library</a> which allows browsers, robots, and mobile devises to be
				identified.
			</li>
			<li>Added <a href="./libraries/table.html">HTML Table Class</a>
				, enabling tables to be generated from arrays or database results.
			</li>
			<li>Added <a href="./libraries/zip.html">Zip Encoding
					Library</a>.
			</li>
			<li>Added <a href="./libraries/ftp.html">FTP Library</a>.
			</li>
			<li>Added the ability to <a
				href="./general/creating_libraries.html">extend libraries</a> and <a
				href="./general/core_classes.html">extend core classes</a>, in
				addition to being able to replace them.
			</li>
			<li>Added support for storing <a href="./general/models.html">models
					within sub-folders</a>.
			</li>
			<li>Added <a href="./helpers/download_helper.html">Download
					Helper</a>.
			</li>
			<li>Added <a href="./database/queries.html">simple_query()</a>
				function to the database classes
			</li>
			<li>Added <a href="./helpers/date_helper.html">standard_date()</a>
				function to the Date Helper.
			</li>
			<li>Added <a href="./database/results.html">$query->free_result()</a>
				to database class.
			</li>
			<li>Added <a href="./database/fields.html">$query->list_fields()</a>
				function to database class
			</li>
			<li>Added <a href="./database/helpers.html">$this->db->platform()</a>
				function
			</li>
			<li>Added new <a href="./helpers/file_helper.html">File
					Helper</a>: get_filenames()
			</li>
			<li>Added new helper: <a href="./helpers/smiley_helper.html">Smiley
					Helper</a></li>
			<li>Added support for &lt;ul> and &lt;ol> lists in the <a
				href="./helpers/html_helper.html">HTML Helper</a></li>
			<li>Added the ability to rewrite <a
				href="./general/alternative_php.html">short tags</a> on-the-fly,
				converting them to standard PHP statements, for those servers that
				do not support short tags. This allows the cleaner syntax to be used
				regardless of whether it's supported by the server.
			</li>
			<li>Added the ability to <a href="./general/managing_apps.html">rename
					or relocate the "application" folder</a>.
			</li>
			<li>Added more thorough initialization in the upload class so
				that all class variables are reset.</li>
			<li>Added "is_numeric" to validation, which uses the native PHP
				is_numeric function.</li>
			<li>Improved the URI handler to make it more reliable when the
				$config['uri_protocol'] item is set to AUTO.</li>
			<li>Moved most of the functions in the Controller class into the
				Loader class, allowing fewer reserved function names for controllers
				when running under PHP 5.</li>
			<li>Updated the DB Result class to return an empty array when
				$query->result() doesn't produce a result.</li>
			<li>Updated the <dfn>input->cookie()</dfn> and <dfn>input->post()</dfn>
				functions in <a href="./libraries/input.html">Input Class</a> to
				permit arrays contained cookies that are arrays to be run through
				the XSS filter.
			</li>
			<li>Documented three functions from the <a
				href="./libraries/validation.html">Validation class</a> that were
				missing from the user guide: set_select(), set_radio(), and
				set_checkbox().
			</li>
			<li>Fixed a bug in the Email class related to SMTP Helo data.</li>
			<li>Fixed a bug in the word wrapping helper and function in the
				email class.</li>
			<li>Fixed a bug in the validation class.</li>
			<li>Fixed a bug in the typography helper that was incorrectly
				wrapping block level elements in paragraph tags.</li>
			<li>Fixed a problem in the form_prep() function that was double
				encoding entities.</li>
			<li>Fixed a bug that affects some versions of PHP when output
				buffering is nested.</li>
			<li>Fixed a bug that caused CI to stop working when the PHP
				magic __get() or __set() functions were used within models or
				controllers.</li>
			<li>Fixed a pagination bug that was permitting negative values
				in the URL.</li>
			<li>Fixed an oversight in which the Loader class was not allowed
				to be extended.</li>
			<li>Changed <dfn>_get_config()</dfn> to <dfn>get_config()</dfn>
				since the function is not a private one.
			</li>
			<li><strong>Deprecated "init" folder</strong>. Initialization
				happens automatically now. <a
				href="./general/creating_libraries.html">Please see
					documentation</a>.</li>
			<li><strong>Deprecated</strong> $this->db->field_names() USE
				$this->db->list_fields()</li>
			<li><strong>Deprecated</strong> the <dfn>$config['log_errors']</dfn>
				item from the config.php file. Instead, <dfn>$config['log_threshold']</dfn>
				can be set to "0" to turn it off.</li>
		</ul>




		<h2>Version 1.4.1</h2>
		<p>Release Date: September 21, 2006</p>

		<ul>
			<li>Added a new feature that passes URI segments directly to
				your function calls as parameters. See the <a
				href="./general/controllers.html">Controllers</a> page for more
				info.
			</li>
			<li>Added support for a function named <dfn>_output()</dfn>,
				which when used in your controllers will received the final rendered
				output from the output class. More info in the <a
				href="controllers.html">Controllers</a> page.
			</li>
			<li>Added several new functions in the <a
				href="./libraries/uri.html">URI Class</a> to let you retrieve and
				manipulate URI segments that have been re-routed using the <a
				href="routing.html">URI Routing</a> feature. Previously, the URI
				class did not permit you to access any re-routed URI segments, but
				now it does.
			</li>
			<li>Added <a href="./libraries/output.html">$this->output->set_header()</a>
				function, which allows you to set server headers.
			</li>
			<li>Updated plugins, helpers, and language classes to allow your
				<dfn>application</dfn> folder to contain its own plugins, helpers,
				and language folders. Previously they were always treated as global
				for your entire installation. If your application folder contains
				any of these resources they will be used <em>instead</em> the global
				ones.
			</li>
			<li>Added <a href="./helpers/inflector_helper.html">Inflector
					helper</a>.
			</li>
			<li>Added <dfn>element()</dfn> function in the <a
				href="./helpers/array_helper.html">array helper</a>.
			</li>
			<li>Added <dfn>RAND()</dfn> to active record <dfn>orderby()</dfn>
				function.
			</li>
			<li>Added <dfn>delete_cookie()</dfn> and <dfn>get_cookie()</dfn>
				to <a href="./helpers/cookie_helper.html">Cookie helper</a>, even
				though the input class has a cookie fetching function.
			</li>
			<li>Added Oracle database driver (still undergoing testing so it
				might have some bugs).</li>
			<li>Added the ability to combine pseudo-variables and php
				variables in the template parser class.</li>
			<li>Added output compression option to the config file.</li>
			<li>Removed the is_numeric test from the db->escape() function.</li>
			<li>Fixed a MySQLi bug that was causing error messages not to
				contain proper error data.</li>
			<li>Fixed a bug in the email class which was causing it to
				ignore explicitly set alternative headers.</li>
			<li>Fixed a bug that was causing a PHP error when the Exceptions
				class was called within the get_config() function since it was
				causing problems.</li>
			<li>Fixed an oversight in the cookie helper in which the config
				file cookie settings were not being honored.</li>
			<li>Fixed an oversight in the upload class. An item mentioned in
				the 1.4 changelog was missing.</li>
			<li>Added some code to allow email attachments to be reset when
				sending batches of email.</li>
			<li>Deprecated the <dfn>application/scripts</dfn> folder. It
				will continue to work for legacy users, but it is recommended that
				you create your own <a href="./general/libraries.html">libraries</a>
				or <a href="./general/models.html">models</a> instead. It was
				originally added before CI had user libraries or models, but it's
				not needed anymore.
			</li>
			<li>Deprecated the <dfn>$autoload['core']</dfn> item from the <kbd>autoload.php</kbd>
				file. Instead, please now use: <kbd>$autoload['libraries']</kbd></li>
			<li>Deprecated the following database functions:
				$this->db->smart_escape_str() and $this->db->fields().</li>
		</ul>



		<h2>Version 1.4.0</h2>
		<p>Release Date: September 17, 2006</p>

		<ul>
			<li>Added <a href="./general/hooks.html">Hooks</a> feature,
				enabling you to tap into and modify the inner workings of the
				framework without hacking the core files.
			</li>
			<li>Added the ability to organize controller files <a
				href="./general/controllers.html">into sub-folders</a>. Kudos to
				Marco for <a href="http://codeigniter.com/forums/viewthread/627/">suggesting</a>
				this (and the next two) feature.
			</li>
			<li>Added regular expressions support for <a
				href="./general/routing.html">routing rules</a>.
			</li>
			<li>Added the ability to <a href="./general/controllers.html">remap
					function calls</a> within your controllers.
			</li>
			<li>Added the ability to <a href="./general/core_classes.html">replace
					core system classes</a> with your own classes.
			</li>
			<li>Added support for % character in URL.</li>
			<li>Added the ability to supply full URLs using the <a
				href="./helpers/url_helper.html">anchor()</a> helper function.
			</li>
			<li>Added mode parameter to <a href="./helpers/file_helper.html">file_write()</a>
				helper.
			</li>
			<li>Added support for changing the port number in the <a
				href="./database/configuration.html">Postgres driver</a>.
			</li>
			<li>Moved the list of "allowed URI characters" out of the Router
				class and into the config file.</li>
			<li>Moved the MIME type array out of the Upload class and into
				its own file in the applications/config/ folder.</li>
			<li>Updated the Upload class to allow the upload field name to
				be set when calling <a href="./libraries/file_uploading.html">do_upload()</a>.
			</li>
			<li>Updated the <a href="./libraries/config.html">Config
					Library</a> to be able to load config files silently, and to be able to
				assign config files to their own index (to avoid collisions if you
				use multiple config files).
			</li>
			<li>Updated the URI Protocol code to allow more options so that
				URLs will work more reliably in different environments.</li>
			<li>Updated the <dfn>form_open()</dfn> helper to allow the GET
				method to be used.
			</li>
			<li>Updated the MySQLi <dfn>execute()</dfn> function with some
				code to help prevent lost connection errors.
			</li>
			<li>Updated the SQLite Driver to check for object support before
				attempting to return results as objects. If unsupported it returns
				an array.</li>
			<li>Updated the Models loader function to allow multiple loads
				of the same model.</li>
			<li>Updated the MS SQL driver so that single quotes are escaped.</li>
			<li>Updated the Postgres and ODBC drivers for better
				compatibility.</li>
			<li>Removed a strtolower() call that was changing URL segments
				to lower case.</li>
			<li>Removed some references that were interfering with PHP 4.4.1
				compatibility.</li>
			<li>Removed backticks from Postgres class since these are not
				needed.</li>
			<li>Renamed <dfn>display()</dfn> to <dfn>_display()</dfn> in the
				Output class to make it clear that it's a private function.
			</li>
			<li>Deprecated the hash() function due to a naming conflict with
				a native PHP function with the same name. Please use <kbd>dohash()</kbd>
				instead.
			</li>
			<li>Fixed an bug that was preventing the input class from
				unsetting GET variables.</li>
			<li>Fixed a router bug that was making it too greedy when
				matching end segments.</li>
			<li>Fixed a bug that was preventing multiple discrete database
				calls.</li>
			<li>Fixed a bug in which loading a language file was producing a
				"file contains no data" message.</li>
			<li>Fixed a session bug caused by the XSS Filtering feature
				inadvertently changing the case of certain words.</li>
			<li>Fixed some missing prefixes when using the database prefix
				feature.</li>
			<li>Fixed a typo in the Calendar class (cal_november).</li>
			<li>Fixed a bug in the <dfn>form_checkbox()</dfn> helper.
			</li>
			<li>Fixed a bug that was allowing the second segment of the URI
				to be identical to the class name.</li>
			<li>Fixed an evaluation bug in the database initialization
				function.</li>
			<li>Fixed a minor bug in one of the error messages in the
				language class.</li>
			<li>Fixed a bug in the date helper <dfn>timespan</dfn> function.
			</li>
			<li>Fixed an undefined variable in the DB Driver class.</li>
			<li>Fixed a bug in which dollar signs used as binding
				replacement values in the DB class would be treated as RegEx
				back-references.</li>
			<li>Fixed a bug in the <dfn>set_hash()</dfn> function which was
				preventing MD5 from being used.
			</li>
			<li>Fixed a couple bugs in the Unit Testing class.</li>
			<li>Fixed an incorrectly named variable in the Validation class.</li>
			<li>Fixed an incorrectly named variable in the URI class.</li>
			<li>Fixed a bug in the config class that was preventing the base
				URL from being called properly.</li>
			<li>Fixed a bug in the validation class that was not permitting
				callbacks if the form field was empty.</li>
			<li>Fixed a problem that was preventing scaffolding from working
				properly with MySQLi.</li>
			<li>Fixed some MS SQL bugs.</li>
			<li>Fixed some doc typos.</li>
		</ul>



		<h2>Version 1.3.3</h2>
		<p>Release Date: June 1, 2006</p>

		<ul>

			<li>Models do <strong>not</strong> connect automatically to the
				database as of this version. <a href="./general/models.html">More
					info here</a>.
			</li>
			<li>Updated the Sessions class to utilize the active record
				class when running session related queries. Previously the queries
				assumed MySQL syntax.</li>
			<li>Updated alternator() function to re-initialize when called
				with no arguments, allowing multiple calls.</li>
			<li>Fixed a bug in the active record "having" function.</li>
			<li>Fixed a problem in the validation class which was making
				checkboxes be ignored when required.</li>
			<li>Fixed a bug in the word_limiter() helper function. It was
				cutting off the fist word.</li>
			<li>Fixed a bug in the xss_clean function due to a PHP bug that
				affects some versions of html_entity_decode.</li>
			<li>Fixed a validation bug that was preventing rules from being
				set twice in one controller.</li>
			<li>Fixed a calendar bug that was not letting it use dynamically
				loaded languages.</li>
			<li>Fixed a bug in the active record class when using WHERE
				clauses with LIKE</li>
			<li>Fixed a bug in the hash() security helper.</li>
			<li>Fixed some typos.</li>
		</ul>




		<h2>Version 1.3.2</h2>
		<p>Release Date: April 17, 2006</p>

		<ul>
			<li>Changed the behavior of the validation class such that if a
				"required" rule is NOT explicitly stated for a field then all other
				tests get ignored.</li>
			<li>Fixed a bug in the Controller class that was causing it to
				look in the local "init" folder instead of the main system one.</li>
			<li>Fixed a bug in the init_pagination file. The $config item
				was not being set correctly.</li>
			<li>Fixed a bug in the auto typography helper that was causing
				inconsistent behavior.</li>
			<li>Fixed a couple bugs in the Model class.</li>
			<li>Fixed some documentation typos and errata.</li>
		</ul>



		<h2>Version 1.3.1</h2>
		<p>Release Date: April 11, 2006</p>

		<ul>
			<li>Added a <a href="./libraries/unit_testing.html">Unit
					Testing Library</a>.
			</li>
			<li>Added the ability to pass objects to the <strong>insert()</strong>
				and <strong>update()</strong> database functions. This feature
				enables you to (among other things) use your <a
				href="./general/models.html">Model class</a> variables to run
				queries with. See the Models page for details.
			</li>
			<li>Added the ability to pass objects to the <a
				href="./general/views.html">view loading function</a>:
				$this->load->view('my_view', <var>$object</var>);
			</li>
			<li>Added <kbd>getwhere</kbd> function to <a
				href="./database/active_record.html">Active Record class</a>.
			</li>
			<li>Added <kbd>count_all</kbd> function to <a
				href="./database/active_record.html">Active Record class</a>.
			</li>
			<li>Added language file for scaffolding and fixed a scaffolding
				bug that occurs when there are no rows in the specified table.</li>
			<li>Added <a href="./database/queries.html">$this->db->last_query()</a>,
				which allows you to view your last query that was run.
			</li>
			<li>Added a new mime type to the upload class for better
				compatibility.</li>
			<li>Changed how cache files are read to prevent PHP errors if
				the cache file contains an XML tag, which PHP wants to interpret as
				a short tag.</li>
			<li>Fixed a bug in a couple of the active record functions
				(where and orderby).</li>
			<li>Fixed a bug in the image library when realpath() returns
				false.</li>
			<li>Fixed a bug in the Models that was preventing libraries from
				being used within them.</li>
			<li>Fixed a bug in the "exact_length" function of the validation
				class.</li>
			<li>Fixed some typos in the user guide</li>
		</ul>


		<h2>Version 1.3</h2>
		<p>Release Date: April 3, 2006</p>

		<ul>
			<li>Added support for <a href="models.html">Models</a>.
			</li>
			<li>Redesigned the database libraries to support additional
				RDBMs (Postgres, MySQLi, etc.).</li>
			<li>Redesigned the <a href="./database/active_record.html">Active
					Record class</a> to enable more varied types of queries with simpler
				syntax, and advanced features like JOINs.
			</li>
			<li>Added a feature to the database class that lets you run <a
				href="./database/call_function.html">custom function calls</a>.
			</li>
			<li>Added support for <a href="controllers.html">private
					functions</a> in your controllers. Any controller function name that
				starts with an underscore will not be served by a URI request.
			</li>
			<li>Added the ability to pass your own initialization parameters
				to your <a href="creating_libraries.html">custom core libraries</a>
				when using $this->load->library()
			</li>
			<li>Added support for running standard <a href="urls.html">query
					string URLs</a>. These can be optionally enabled in your config file.
			</li>
			<li>Added the ability to <a href="urls.html">specify a
					"suffix"</a>, which will be appended to your URLs. For example, you
				could add .html to your URLs, making them appear static. This
				feature is enabled in your config file.
			</li>
			<li>Added a new error template for use with native PHP errors.</li>
			<li>Added "alternator" function in the <a
				href="./helpers/string_helper.html">string helpers</a>.
			</li>
			<li>Removed slashing from the input class. After much debate we
				decided to kill this feature.</li>
			<li>Change the commenting style in the scripts to the PEAR
				standard so that IDEs and tools like phpDocumenter can harvest the
				comments.</li>
			<li>Added better class and function name-spacing to avoid
				collisions with user developed classes. All CodeIgniter classes are
				now prefixed with <dfn>CI_</dfn> and all controller methods are
				prefixed with <dfn>_ci</dfn> to avoid controller collisions. A list
				of reserved function names can be <a href="controllers.html">found
					here</a>.
			</li>
			<li>Redesigned how the "CI" super object is referenced,
				depending on whether PHP 4 or 5 is being run, since PHP 5 allows a
				more graceful way to manage objects that utilizes a bit less
				resources.</li>
			<li>Deprecated: <var>$this->db->use_table()</var> has been
				deprecated. Please read the <a href="./database/active_record.html">Active
					Record</a> page for information.
			</li>
			<li>Deprecated: <var>$this->db->smart_escape_str()</var> has
				been deprecated. Please use this instead: <var>$this->db->escape()</var></li>
			<li>Fixed a bug in the exception handler which was preventing
				some PHP errors from showing up.</li>
			<li>Fixed a typo in the URI class. $this->total_segment() should
				be plural: $this->total_segments()</li>
			<li>Fixed some typos in the default calendar template</li>
			<li>Fixed some typos in the user guide</li>
		</ul>








		<h2>Version 1.2</h2>
		<p>Release Date: March 21, 2006</p>

		<ul>
			<li>Redesigned some internal aspects of the framework to resolve
				scoping problems that surfaced during the beta tests. The problem
				was most notable when instantiating classes in your constructors,
				particularly if those classes in turn did work in their
				constructors.</li>
			<li>Added a global function named <a
				href="ancillary_classes.html">get_instance()</a> allowing the main
				CodeIgniter object to be accessible throughout your own classes.
			</li>
			<li>Added new <a href="./helpers/file_helper.html">File
					Helper</a>: delete_files()
			</li>
			<li>Added new <a href="./helpers/url_helper.html">URL
					Helpers</a>: base_url(), index_page()
			</li>
			<li>Added the ability to create your own <a
				href="creating_libraries.html">core libraries</a> and store them in
				your local application directory.
			</li>
			<li>Added an <kbd>overwrite</kbd> option to the <a
				href="./libraries/file_uploading.html">Upload class</a>, enabling
				files to be overwritten rather than having the file name appended.
			</li>
			<li>Added Javascript Calendar plugin.</li>
			<li>Added search feature to user guide. Note: This is done using
				Google, which at the time of this writing has not crawled all the
				pages of the docs.</li>
			<li>Updated the parser class so that it allows tag pars within
				other tag pairs.</li>
			<li>Fixed a bug in the DB "where" function.</li>
			<li>Fixed a bug that was preventing custom config files to be
				auto-loaded.</li>
			<li>Fixed a bug in the mysql class bind feature that prevented
				question marks in the replacement data.</li>
			<li>Fixed some bugs in the xss_clean function</li>
		</ul>





		<h2>Version Beta 1.1</h2>
		<p>Release Date: March 10, 2006</p>

		<ul>
			<li>Added a <a href="./libraries/calendar.html">Calendaring
					class</a>.
			</li>
			<li>Added support for running <a href="managing_apps.html">multiple
					applications</a> that share a common CodeIgniter backend.
			</li>
			<li>Moved the "uri protocol" variable from the index.php file
				into the config.php file</li>
			<li>Fixed a problem that was preventing certain function calls
				from working within constructors.</li>
			<li>Fixed a problem that was preventing the $this->load->library
				function from working in constructors.</li>
			<li>Fixed a bug that occurred when the session class was loaded
				using the auto-load routine.</li>
			<li>Fixed a bug that can happen with PHP versions that do not
				support the E_STRICT constant</li>
			<li>Fixed a data type error in the form_radio function (form
				helper)</li>
			<li>Fixed a bug that was preventing the xss_clean function from
				being called from the validation class.</li>
			<li>Fixed the cookie related config names, which were
				incorrectly specified as $conf rather than $config</li>
			<li>Fixed a pagination problem in the scaffolding.</li>
			<li>Fixed a bug in the mysql class "where" function.</li>
			<li>Fixed a regex problem in some code that trimmed duplicate
				slashes.</li>
			<li>Fixed a bug in the br() function in the HTML helper</li>
			<li>Fixed a syntax mistake in the form_dropdown function in the
				Form Helper.</li>
			<li>Removed the "style" attributes form the form helpers.</li>
			<li>Updated the documentation. Added "next/previous" links to
				each page and fixed various typos.</li>
		</ul>

		<h2>Version Beta 1.0</h2>
		<p>Release Date: February 28, 2006</p>
		<p>First publicly released version.</p>

	</div>
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